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  • 8/9/2019 Principles Standards

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    A Correlation of

    to the

    NCTM

    Principles and Standardsfor School Mathematics

    Grades K-5

    N/M-507

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    Introduction

    This document demonstrates how wellInvestigations in Number, Data, and Space aligns with

    the NCTM Standards. Each mathematics standard is presented with the location of directinstruction that corresponds in theInvestigationsprogram.

    Investigations in Number, Data, and Space is a Kindergarten through Grade 5 curriculum

    consisting of a series of Teachers Editions that focus on major mathematical ideas, content, andpedagogy. Each book emphasizes depth of mathematical thinking over fragmented topics.

    Students invent strategies and approaches to solving problems and rely less on rote learningstressed in traditional textbooks. The program blends concrete materials with appropriate

    technology, including calculators in everyday mathematical lessons.

    Developed by TERC under a grant from the National Science Foundation,Investigations in

    Number, Data, and Space is comprehensive in its approach to students of diverse cultural,ethnic and language groups. In an effort to give mathematical lessons a broader spectrum,students are encouraged to explore working in groups, individually and as a whole class. By

    incorporating these methods into everyday learning, students learn to express mathematicalthinking through talking, drawing, and writing.

    Investigations in Number, Data and Space was developed after three years of nationwide

    field-testing and includes teachers practical suggestions, student dialogues, and teacher notes.

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    TABLE OF CONTENTS

    Grades Kindergarten-2

    Number and Operations Standard....1

    Algebra Standard .....14

    Geometry

    Standard...24

    Measurement Standard...34

    Data Analysis and Probability Standard....40

    Problem Solving Standard...47

    Reasoning and Proof Standard........55Communication Standard....62

    Connections

    Standard.......69

    Representation

    Standard..........75

    Grades 3-5

    Number and Operations Standard......80

    Algebra Standard .......103

    Geometry

    Standard.116

    Measurement Standard.133

    Data Analysis and Probability Standard......142

    Problem Solving Standard.159

    Reasoning and Proof Standard..169Communication Standard..179

    Connections

    Standard.....189

    Representation

    Standard.......197

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    1

    Investigations in Number, Data, and Space

    to the

    NCTM Standards

    Grades K-2

    Number and Operations Standard

    In kindergarten through grade 2 all students should

    Understand numbers, ways of representing numbers, relationships among numbers, and

    number systems

    count with understanding and recognize "how many" in sets of objects;

    References:Kindergarten: Mathematical Thinking in KindergartenInvestigations 1, 2, 3

    About Classroom Routines: 68-69

    Pattern Trains and Hopscotch PathsAbout Classroom Routines: 92-93

    Collecting, Counting, and Measuring

    Investigations 1, 2, 3, 4, 5About Classroom Routines: 102-103

    Counting Ourselves and Others

    Investigations 1, 3, 4About Classroom Routines: 96-97

    Making Shapes and Building Blocks

    About Classroom Routines: 106-107

    How Many in All?Investigations 1, 2, 3, 4

    About Classroom Routines: 100-101

    Grade 1: Mathematical Thinking at Grade 1

    Investigation 2: Sessions 4-6Investigation 4: Sessions 4-6

    Building Number Sense

    Investigation 1: Sessions 1-8Investigation 2: Sessions 1-9

    Investigation 3: Sessions 1-9

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    Investigations in Number, Data, & Space NCTM Standards

    2

    Investigation 4: Sessions 1-10

    Quilt Squares and Block TownsInvestigation 1: Sessions 2-10

    Investigation 3: Sessions 6-7

    Number Games and Story ProblemsInvestigation 2: Sessions 1-8, 10-12

    Bigger, Taller, Heavier, Smaller

    Investigation 2: Sessions 1-7

    Grade 2: Mathematical Thinking at Grade 2Investigation 2: Sessions 6, 7

    Investigation 4: Sessions 1-5Investigation 5: Sessions 1-5

    Coins, Coupons, and Combinations

    Investigation 1: Sessions 1-3Investigation 2: Sessions 1-10

    Investigation 4: Sessions 1-4

    Putting Together and Taking Apart

    Investigation 2: Sessions 1-7Investigation 4: Sessions 2-4

    Investigation 5: Sessions 2-3, 6

    use multiple models to develop initial understandings of place value and the base-ten

    number system;

    References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigations 1, 2, 3

    About Classroom Routines: 68-69

    Pattern Trains and Hopscotch PathsAbout Classroom Routines: 92-93

    Collecting, Counting, and Measuring

    Investigations 1, 2, 3, 4, 5About Classroom Routines: 102-103

    Counting Ourselves and Others

    Investigations 1, 3, 4About Classroom Routines: 96-97

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    Investigations in Number, Data, & Space NCTM Standards

    3

    Making Shapes and Building Blocks

    About Classroom Routines: 106-107

    How Many in All?

    Investigations 1, 2, 3, 4About Classroom Routines: 100-101

    Grade 1: Mathematical Thinking at Grade 1

    Investigation 2: Sessions 4-6Investigation 4: Sessions 4-6

    Building Number Sense

    Investigation 1: Sessions 1-8Investigation 2: Sessions 1-9

    Investigation 3: Sessions 1-9Investigation 4: Sessions 1-10

    Quilt Squares and Block Towns

    Investigation 1: Sessions 2-10Investigation 3: Sessions 6-7

    Number Games and Story Problems

    Investigation 2: Sessions 1-8, 10-12

    Bigger, Taller, Heavier, SmallerInvestigation 2: Sessions 1-7

    Grade 2: Mathematical Thinking at Grade 2

    Investigation 2: Sessions 6, 7Investigation 4: Sessions 1-5

    Investigation 5: Sessions 1-5

    Coins, Coupons, and CombinationsInvestigation 1: Sessions 1-3

    Investigation 2: Sessions 1-10Investigation 4: Sessions 1-4

    Putting Together and Taking Apart

    Investigation 2: Sessions 1-7Investigation 4: Sessions 2-4Investigation 5: Sessions 2-3, 6

    develop understanding of the relative position and magnitude of whole numbers and of

    ordinal and cardinal numbers and their connections;

    References:

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    Investigations in Number, Data, & Space NCTM Standards

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    Kindergarten: Collecting, Counting, and MeasuringInvestigations 5-6

    Grade 1: Mathematical Thinking at Grade 1Investigation 2: Sessions 2-3

    Building Number Sense

    Investigation 3: Sessions 1-7, 9

    Number Games and Story ProblemsInvestigation 2: Sessions 6-9

    Grade 2: Putting Together and Taking ApartInvestigation 2: Sessions 1-4

    Investigation 5: Sessions 2-3, 6, 8

    Timelines and Rhythm Patterns

    Investigation 1: Sessions 1-5

    develop a sense of whole numbers and represent and use them in flexible ways, including

    relating, composing, and decomposing numbers;

    References:

    Kindergarten: Collecting, Counting, and MeasuringInvestigations 4-6

    How Many in All?

    Investigations 2-4

    Grade 1: Mathematical Thinking in Grade 1

    Investigation 2: Sessions 1-6Investigation 4: Sessions 2-6

    Investigation 5: Sessions 2-4

    Building Number SenseInvestigation 1: Sessions 1-6, 9Investigation 2: Sessions 1-9

    Investigation 3: Sessions 1-7, 9Investigation 4: Sessions 1-10

    Number Games and Story Problems

    Investigation 1: Sessions 1-10Investigation 2: Sessions 1-13

    Investigation 3: Sessions 1-13

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    Investigations in Number, Data, & Space NCTM Standards

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    Grade 2: Mathematical Thinking at Grade 2Investigation 1: Session 1

    Investigation 2: Sessions 1-6, 8Investigation 4: Sessions 1, 5

    Investigation 5: Sessions 1-3

    Coins, Coupons, and CombinationsInvestigation 1: Sessions 1-11

    Investigation 2: Session 10Investigation 3: Sessions 1-5

    Investigation 4: Sessions 2-4

    Putting Together and Taking ApartInvestigation 1: Sessions 1-6

    Investigation 2: Sessions 1-7Investigation 3: Sessions 1-5

    Investigation 4: Sessions 1-4Investigation 5: Sessions 1-8

    Timelines and Rhythm Patterns

    Investigation 1: Sessions 1-5

    connect number words and numerals to the quantities they represent, using various

    physical models and representations;

    References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigations 1, 2, 3

    About Classroom Routines: 68-69

    Pattern Trains and Hopscotch PathsAbout Classroom Routines: 92-93

    Collecting, Counting, and Measuring

    Investigations 1, 2, 3, 4, 5About Classroom Routines: 102-103

    Counting Ourselves and Others

    Investigations 1, 3, 4About Classroom Routines: 96-97

    Making Shapes and Building Blocks

    About Classroom Routines: 106-107

    How Many in All?Investigations 1, 2, 3, 4

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    Investigations in Number, Data, & Space NCTM Standards

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    About Classroom Routines: 100-101

    Grade 1: Mathematical Thinking at Grade 1

    Investigation 2: Sessions 4-6Investigation 4: Sessions 4-6

    Building Number Sense

    Investigation 1: Sessions 1-8Investigation 2: Sessions 1-9

    Investigation 3: Sessions 1-9Investigation 4: Sessions 1-10

    Quilt Squares and Block Towns

    Investigation 1: Sessions 2-10Investigation 3: Sessions 6-7

    Number Games and Story Problems

    Investigation 2: Sessions 1-8, 10-12

    Bigger, Taller, Heavier, SmallerInvestigation 2: Sessions 1-7

    Grade 2: Mathematical Thinking at Grade 2

    Investigation 2: Sessions 6, 7Investigation 4: Sessions 1-5

    Investigation 5: Sessions 1-5

    Coins, Coupons, and CombinationsInvestigation 1: Sessions 1-3

    Investigation 2: Sessions 1-10Investigation 4: Sessions 1-4

    Putting Together and Taking ApartInvestigation 2: Sessions 1-7

    Investigation 4: Sessions 2-4Investigation 5: Sessions 2-3, 6

    understand and represent commonly used fractions, such as 1/4, 1/3, and 1/2.

    Students usingInvestigations in Number, Data, and Spaceare introduced to fraction conceptsin Grade 1. Kindergarten students gain experience with preliminary concepts, which will lead

    to the introduction of fractions, including the subdivision of shapes into equal parts. Grade 1students divide shapes and groups into equal parts or equal groups. They explore halves in

    units on measuring capacity and length. A sample reference for Kindergarten is given below.

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    Investigations in Number, Data, & Space NCTM Standards

    7

    References:

    Kindergarten: Making Shapes and Building Blocks

    Investigation 4: Choice Time: Fill the Hexagons

    Grade 1: Building Number Sense

    Investigation 1: Session 2

    Bigger, Taller, Heavier, Smaller

    Investigation 2: Sessions 2-4Investigation 3: Session 2

    Grade 2: Shapes, Halves, and Symmetry

    Investigation 3: Sessions 1-8

    Understand meanings of operations and how they relate to one another

    understand various meanings of addition and subtraction of whole numbers and the

    relationship between the two operations;

    References:

    Kindergarten: Collecting, Counting, and MeasuringInvestigation 4

    How Many in All?Investigations 2-4

    Grade 1: Mathematical Thinking in Grade 1

    Investigation 2: Sessions 1-6Investigation 4: Sessions 2-6

    Investigation 5: Sessions 2-4

    Building Number SenseInvestigation 1: Sessions 1-6, 9

    Investigation 2: Sessions 1-9Investigation 4: Sessions 1-10

    Number Games and Story ProblemsInvestigation 1: Sessions 1-10

    Investigation 2: Sessions 1-8, 10-13Investigation 3: Sessions 1-13

    Grade 2: Mathematical Thinking at Grade 2

    Investigation 1: Session 1Investigation 2: Sessions 1-6, 8

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    Investigations in Number, Data, & Space NCTM Standards

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    Investigation 4: Sessions 1, 5Investigation 5: Sessions 1-3

    Coins, Coupons, and Combinations

    Investigation 1: Sessions 1-11

    Investigation 2: Session 10Investigation 3: Sessions 1-5Investigation 4: Sessions 2-4

    Putting Together and Taking Apart

    Investigation 1: Sessions 1-6Investigation 2: Sessions 1-7

    Investigation 3: Sessions 1-5Investigation 4: Sessions 1-4

    Investigation 5: Sessions 1-8

    understand the effects of adding and subtracting whole numbers;

    References:

    Kindergarten: Collecting, Counting, and Measuring

    Investigation 4

    How Many in All?

    Investigations 2-4

    Grade 1: Mathematical Thinking in Grade 1Investigation 2: Sessions 1-6

    Investigation 4: Sessions 2-6Investigation 5: Sessions 2-4

    Building Number Sense

    Investigation 1: Sessions 1-6, 9Investigation 2: Sessions 1-9

    Investigation 4: Sessions 1-10

    Number Games and Story ProblemsInvestigation 1: Sessions 1-10

    Investigation 2: Sessions 1-8, 10-13Investigation 3: Sessions 1-13

    Grade 2: Mathematical Thinking at Grade 2

    Investigation 1: Session 1Investigation 2: Sessions 1-6, 8

    Investigation 4: Sessions 1, 5Investigation 5: Sessions 1-3

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    Coins, Coupons, and Combinations

    Investigation 1: Sessions 1-11Investigation 2: Session 10

    Investigation 3: Sessions 1-5

    Investigation 4: Sessions 2-4

    Putting Together and Taking Apart

    Investigation 1: Sessions 1-6Investigation 2: Sessions 1-7

    Investigation 3: Sessions 1-5Investigation 4: Sessions 1-4

    Investigation 5: Sessions 1-8

    understand situations that entail multiplication and division, such as equal groupings of

    objects and sharing equally.Students usingInvestigations in Number, Data, and Spaceare gradually and progressively

    introduced to multiplication and division concepts in Kindergarten through Grade 2.Kindergarten students gain experience with preliminary concepts, which will lead to

    understanding situations that entail multiplication and division, including the subdivision ofshapes into equal parts. Grade 1 students divide shapes and groups into equal parts and equal

    groups. They also gain experience with repeated addition and skip counting. Grade 2 studentspractice skip counting by 2s, 5s, and 10s. They explore the relationship between skip

    counting and grouping and apply these concepts to problem situations.References:

    Kindergarten: Making Shapes and Building BlocksInvestigation 4: Choice Time: Fill the Hexagons

    Grade 1: Building Number Sense

    Investigation 1: Session 2

    Number Games and Story ProblemsInvestigation 1: Sessions 1-3

    Investigation 2: Sessions 1-2, 4-8, 10-12

    Grade 2: Mathematical Thinking at Grade 2Investigation 2: Session 6

    Investigation 4: Sessions 1-4Investigation 5: Sessions 4-5

    Coins, Coupons, and Combinations

    Investigation 2: Sessions 1-10

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    Investigations in Number, Data, & Space NCTM Standards

    10

    Compute fluently and make reasonable estimates

    develop and use strategies for whole-number computations, with a focus on addition and

    subtraction;

    References:Kindergarten: Collecting, Counting, and MeasuringInvestigation 4

    How Many in All?Investigations 2-4

    Grade 1: Mathematical Thinking in Grade 1

    Investigation 2: Sessions 1-6Investigation 4: Sessions 2-6

    Investigation 5: Sessions 2-4

    Building Number SenseInvestigation 1: Sessions 1-6, 9

    Investigation 2: Sessions 1-9Investigation 4: Sessions 1-10

    Number Games and Story Problems

    Investigation 1: Sessions 1-10Investigation 2: Sessions 1-8, 10-13

    Investigation 3: Sessions 1-13

    Grade 2: Mathematical Thinking at Grade 2Investigation 1: Session 1

    Investigation 2: Sessions 1-6, 8Investigation 4: Sessions 1, 5

    Investigation 5: Sessions 1-3

    Coins, Coupons, and CombinationsInvestigation 1: Sessions 1-11

    Investigation 2: Session 10Investigation 3: Sessions 1-5

    Investigation 4: Sessions 2-4

    Putting Together and Taking ApartInvestigation 1: Sessions 1-6

    Investigation 2: Sessions 1-7Investigation 3: Sessions 1-5

    Investigation 4: Sessions 1-4Investigation 5: Sessions 1-8

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    Investigations in Number, Data, & Space NCTM Standards

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    develop fluency with basic number combinations for addition and subtraction;

    References:

    Kindergarten: Collecting, Counting, and MeasuringInvestigation 4

    How Many in All?Investigations 2-4

    Grade 1: Mathematical Thinking at Grade 1Investigation 2: Sessions 1-6

    Investigation 4: Sessions 2-4, 6Investigation 5: Sessions 2-4

    Building Number Sense

    Investigation 1: Sessions 1-9Investigation 2: Sessions 1-9

    Investigation 3: Sessions 5-7

    Investigation 4: Sessions 1-10

    Survey Questions and Secret Rules

    Investigation 4: Sessions 4-5

    Quilt Squares and Block TownsInvestigation 1: Sessions 3-6

    Investigation 3: Sessions 6-7

    Number Games and Story ProblemsInvestigation 1: Sessions 1-10

    Investigation 2: Sessions 1-13Investigation 3: Sessions 1-13

    Grade 2: Mathematical Thinking at Grade 2Investigation 1: Session 1

    Investigation 2: Sessions 1-3, 6, 8Investigation 4: Sessions 1-5

    Investigation 5: Sessions 1-3

    Coins, Coupons, and Combinations

    Investigation 1: Sessions 1-11Investigation 2: Session 10Investigation 3: Sessions 1-5

    Investigation 4: Sessions 2-4

    Putting Together and Taking ApartInvestigation 1: Sessions 1-6

    Investigation 2: Sessions 1-7

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    Investigation 3: Sessions 1-5Investigation 4: Sessions 1-4

    Investigation 5: Sessions 1-8

    use a variety of methods and tools to compute, including objects, mental computation,estimation, paper and pencil, and calculators.

    References:

    Kindergarten: Collecting, Counting, and MeasuringInvestigation 4

    How Many in All?Investigations 2-4

    Grade 1: Mathematical Thinking at Grade 1Investigation 2: Sessions 1-6

    Investigation 4: Sessions 2-4, 6

    Investigation 5: Sessions 2-4

    Building Number Sense

    Investigation 1: Sessions 1-9Investigation 2: Sessions 1-9

    Investigation 3: Sessions 5-7Investigation 4: Sessions 1-10

    Survey Questions and Secret Rules

    Investigation 4: Sessions 4-5

    Quilt Squares and Block TownsInvestigation 1: Sessions 3-6

    Investigation 3: Sessions 6-7

    Number Games and Story ProblemsInvestigation 1: Sessions 1-10

    Investigation 2: Sessions 1-13Investigation 3: Sessions 1-13

    Grade 2: Mathematical Thinking at Grade 2Investigation 1: Session 1Investigation 2: Sessions 1-3, 6, 8

    Investigation 4: Sessions 1-5Investigation 5: Sessions 1-3

    Coins, Coupons, and Combinations

    Investigation 1: Sessions 1-11

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    Investigation 2: Session 10Investigation 3: Sessions 1-5

    Investigation 4: Sessions 2-4

    Putting Together and Taking Apart

    Investigation 1: Sessions 1-6Investigation 2: Sessions 1-7Investigation 3: Sessions 1-5

    Investigation 4: Sessions 1-4Investigation 5: Sessions 1-8

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    Investigations in Number, Data, & Space NCTM Standards

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    Algebra Standard

    In kindergarten through grade 2 all students should

    Understand patterns, relations, and functions

    sort, classify, and order objects by size, number, and other properties;

    Kindergarten: Kindergarten students usingInvestigations in Number, Data, and Spacesort,classify, and order objects in a variety of settings. Students explore and compare the attributes

    of various geometric manipulatives, including pattern blocks and geoblocks. Students classifyand sort data. They classify shapes in the environment.

    Sample References:

    Mathematical Thinking in Kindergarten

    Investigation 1: Choice Time

    Investigation 4: Choice Time: Staircase Patterns

    Collecting, Counting, and Measuring

    Investigation 4Investigation 5

    Investigation 6

    Counting Ourselves and OthersInvestigation 1

    Investigation 2Investigation 3

    Investigation 4

    Making Shapes and Building BlocksInvestigation 1

    Investigation 3Investigation 4

    Investigation 5

    Grade 1: In addition to the following references, every text in the Grade 1Investigations in

    Number, Data, and Spaceseries includes a description of sorting games in the appendix of thetext, entitled About Classroom Routines. The first game, entitled, Guess My Rule, requires

    students to determine the common attribute of a set of objects. After students have becomefamiliar with this game, they can play Guess My Object, in which students ask yes-or-no

    questions, based on attributes, and use the process of elimination to determine which particularobject was secretly chosen from a set of objects.

    Sample References:

    Survey Questions and Secret Rules

    Investigation 1: Sessions 1-6

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    Investigation 2: Sessions 3-6Investigation 4: Sessions 2-3

    Quilt Shapes and Block Towns

    Investigation 1: Sessions 11-12

    Grade 2:Second graders sort, classify, and order objects using a number of techniques in avariety of situations. For example, students sort manipulative materials based on their

    attributes. They sort and classify information. The children sort two-dimensional geometricshapes and three-dimensional geometric solids. They use Venn diagrams to show relationships

    within a group of related objects.

    Sample References:

    Mathematical Thinking at Grade 2Investigation 1: Sessions 2-4

    Investigation 3: Sessions 1-5Investigation 5: Sessions 1-2, 4-6

    Does It Walk, Crawl, or Swim?Investigation 1: Sessions 1-6

    Investigation 2: Sessions 1-4Investigation 3: Sessions 1-3

    Investigation 4: Sessions 1-3

    recognize, describe, and extend patterns such as sequences of sounds and shapes or simple

    numeric patterns and translate from one representation to another;

    References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigation 3

    About Classroom Routines, pp. 71, 74-75

    Pattern Trains and Hopscotch PathsInvestigations 1, 2, 3, 4

    About Classroom Routines, pp. 95, 98-99

    Collecting, Counting, and MeasuringAbout Classroom Routines, pp. 105, 108-109

    Counting Ourselves and Others

    About Classroom Routines, pp. 99, 102-103

    Making Shapes and Building BlocksAbout Classroom Routines, pp. 109, 112-113

    Appendix: Shapes Teacher Tutorial, pp. 120-144

    How Many in All?About Classroom Routines, pp. 103, 106-107

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    Grade 1: Mathematical Thinking at Grade 1

    Investigation 3: Sessions 1-6Investigation 4: Sessions 2-3, 5

    Building Number SenseInvestigation 3: Sessions 1-8Investigation 4: Session 10

    Survey Questions and Secret Rules

    Investigation 3: Sessions 2-3

    Quilt Squares and Block TownsInvestigation 1: Sessions 13-15

    Number Games and Story Problems

    Investigation 2: Sessions 2, 6-9

    Grade 2: Mathematical Thinking at Grade 2Investigation 3: Sessions 1-4, 6

    Coins, Coupons, and Combinations

    Investigation 2: Sessions 1-2, 4-5, 10Investigation 3: Session 1

    Investigation 4: Sessions 1-4

    Shapes, Halves, and SymmetryInvestigation 1: Sessions 2-8

    Investigation 2: Sessions 1, 3Investigation 4: Sessions 1-7

    Putting Together and Taking Apart

    Investigation 2: Sessions 1-2

    Timelines and Rhythm PatternsInvestigation 2: Sessions 1-5

    analyze how both repeating and growing patterns are generated.

    References:

    Kindergarten: Mathematical Thinking in Kindergarten

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    Investigation 3About Classroom Routines, pp. 71, 74-75

    Pattern Trains and Hopscotch Paths

    Investigations 1, 2, 3, 4

    About Classroom Routines, pp. 95, 98-99

    Collecting, Counting, and Measuring

    About Classroom Routines, pp. 105, 108-109

    Counting Ourselves and OthersAbout Classroom Routines, pp. 99, 102-103

    Making Shapes and Building Blocks

    About Classroom Routines, pp. 109, 112-113Appendix: Shapes Teacher Tutorial, pp. 120-144

    How Many in All?

    About Classroom Routines, pp. 103, 106-107

    Grade 1: Mathematical Thinking at Grade 1Investigation 3: Sessions 1-6

    Investigation 4: Sessions 2-3, 5

    Building Number SenseInvestigation 3: Sessions 1-8

    Investigation 4: Session 10

    Survey Questions and Secret RulesInvestigation 3: Sessions 2-3

    Quilt Squares and Block Towns

    Investigation 1: Sessions 13-15

    Number Games and Story ProblemsInvestigation 2: Sessions 2, 6-9

    Grade 2: Mathematical Thinking at Grade 2Investigation 3: Sessions 1-4, 6

    Coins, Coupons, and Combinations

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    Investigation 2: Sessions 1-2, 4-5, 10Investigation 3: Session 1

    Investigation 4: Sessions 1-4

    Shapes, Halves, and Symmetry

    Investigation 1: Sessions 2-8Investigation 2: Sessions 1, 3Investigation 4: Sessions 1-7

    Putting Together and Taking Apart

    Investigation 2: Sessions 1-2

    Timelines and Rhythm PatternsInvestigation 2: Sessions 1-5

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    Represent and analyze mathematical situations and structures using algebraic symbols

    illustrate general principles and properties of operations, such as commutativity, using

    specific numbers;

    References:Kindergarten: How Many in All?Investigations 2, 4

    Grade 1: Mathematical Thinking at Grade 1Investigation 2: Session 4:Teacher Note

    Building Number Sense

    Investigation 2: Sessions 1-2, 4-9

    Number Games and Story ProblemsInvestigation 1: Sessions 1-10

    Investigation 4: Sessions 1, 6-9

    Grade 2: Coins, Coupons, and CombinationsInvestigation 1: Session 1

    Putting Together and Taking Apart

    Investigation 2: Session 1Investigation 4: Sessions 1-4

    Investigation 5: Session 6

    use concrete, pictorial, and verbal representations to develop an understanding of

    invented and conventional symbolic notations.

    References:

    Kindergarten: How Many in All?Investigations 1, 2, 3, 4

    Teacher Note, p. 45

    Grade 1: Building Number SenseInvestigation 1: Sessions 2, 7-9

    Investigation 2: Sessions 1-2, 6-8Investigation 4: Sessions 1-2, 6-10

    Number Games and Story Problems

    Investigation 1: Sessions 1-10Investigation 2: Sessions 1-2, 10-12

    Investigation 3: Sessions 1-13Teacher Notes: Introducing Notation, p. 162

    Grade 2: Mathematical Thinking at Grade 2Investigation 1: Session 1

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    Investigation 2: Sessions 1, 4-6Investigation 3: Session 5

    Investigation 5: Session 3

    Coins, Coupons, and Combinations

    Investigation 2: Session 3Investigation 3: Sessions 1-5Investigation 4: Sessions 2-4

    Putting Together and Taking Apart

    Investigation 1: Sessions 5-6Investigation 3: Sessions 3-5: Teacher Note, p. 85

    Investigation 5: Session 7

    Timelines and Rhythm PatternsInvestigation 2: Sessions 1-5

    Use mathematical models to represent and understand quantitative relationships

    model situations that involve the addition and subtraction of whole numbers, using

    objects, pictures, and symbols.

    References:

    Kindergarten: Collecting, Counting, and Measuring

    Investigation 4

    How Many in All?

    Investigations 2-4

    Grade 1: Mathematical Thinking in Grade 1Investigation 2: Sessions 1-6

    Investigation 4: Sessions 2-6Investigation 5: Sessions 2-4

    Building Number Sense

    Investigation 1: Sessions 1-6, 9Investigation 2: Sessions 1-9

    Investigation 4: Sessions 1-10

    Number Games and Story ProblemsInvestigation 1: Sessions 1-10

    Investigation 2: Sessions 1-8, 10-13Investigation 3: Sessions 1-13

    Grade 2: Mathematical Thinking at Grade 2Investigation 1: Session 1

    Investigation 2: Sessions 1-6, 8Investigation 4: Sessions 1, 5

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    Investigation 5: Sessions 1-3

    Coins, Coupons, and CombinationsInvestigation 1: Sessions 1-11

    Investigation 2: Session 10

    Investigation 3: Sessions 1-5Investigation 4: Sessions 2-4

    Putting Together and Taking ApartInvestigation 1: Sessions 1-6

    Investigation 2: Sessions 1-7Investigation 3: Sessions 1-5

    Investigation 4: Sessions 1-4Investigation 5: Sessions 1-8

    Analyze change in various concepts

    describe qualitative change, such as a student's growing taller;

    Students in Kindergarten through Grade 2 usingInvestigations in Number, Data, and Space

    apply concepts of qualitative change to extend patterns related to geometric size and shape.Kindergarten students explore changing combinations of shapes, which can cover a given area,

    and they explore changing arrangements of a given number of objects. Grade 1 studentsexplore changes in weather data the cyclical nature of time. While reading a story about weight

    and capacity, first graders discuss gradual changes in the level at which a boat rests on asurface of water as animals climb into the boat, one at a time. Second graders describe

    qualitative changes in rhythm patterns.

    References:

    Kindergarten: Pattern Trains and Hopscotch PathsInvestigations 1, 2, 3, 4

    Making Shapes and Building BlocksInvestigations 2, 3, 4

    How Many in All?

    Investigation 2

    Grade 1: Building Number SenseAbout Classroom Routines: Understanding Time and Changes

    Survey Questions and Secret Rules

    Investigation 3: Session 3

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    Quilt Squares and Block TownsInvestigation 1: Sessions 13-15

    About Classroom Routines: Understanding Time and Changes

    Bigger, Taller, Heavier, Smaller

    Investigation 1: Sessions 1-2, 5-6About Classroom Routines: Understanding Time and Changes

    Grade 2: Mathematical Thinking at Grade 2Investigation 1: Session 1

    Shapes, Halves, and Symmetry

    Investigation 2: Session 3

    Timelines and Rhythm PatternsInvestigation 2: Sessions 1-5

    describe quantitative change, such as a student's growing two inches in one year.

    Kindergarten students describe quantitative change as they graph classroom attendance data

    using an attendance stick and name cards or name pins to see how many children are presentand absent for each day of school. They estimate quantitative change as they compare how

    many objects are in the Counting Jar (in About Classroom Routines) over several days. Theyillustrate quantitative change as they explore changing combinations of numbers with a given

    sum.

    First grade students progress from qualitative to quantitative weight comparisons as theygradually add weight units (e.g., washers, blocks) to achieve equilibrium on a balance scale.

    They solve combining problems involving unknown change, where students are given initialand final amounts and are asked to come up with a quantitative representation of how the initial

    value changed.

    Second graders find quantitative change as they calculate differences between numbers on ahundred chart, and as they calculate the change necessary to begin at a given number and end at

    one hundred. They explore and chart quantitative changes in time on timelines.

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    In addition to the following references, each unit of study inInvestigations in Number,Data, and Spaceincludes a feature entitled, About Classroom Routines, which includes a

    section related to changes over time. In Kindergarten this section is entitled, Calendar, andcontains activities related to the passage of time. In Grade 1 this section is entitled,

    Understanding Time and Changes, and contains ideas for helping students develop an

    understanding of time-related ideas such as sequencing events and understanding relationshipsamong time periods. In Grade 2 this section is entitled, Time and Time Again, and containssuggestions for activities to help students develop an understanding of time-related ideas such

    as sequencing events, the passage of time, duration of time periods, and identifying importanttimes in their day.

    References:

    Kindergarten: Mathematical Thinking in Kindergarten

    Investigations 1, 3

    Counting Ourselves and OthersAbout Classroom Routines, p. 97

    How Many in All?

    Investigation 4

    Grade 1: Survey Questions and Secret RulesInvestigation 4: Sessions 2-3

    Number Games and Story ProblemsInvestigation 3: Sessions 9-13

    Bigger, Taller, Heavier, Smaller

    Investigation 1: Sessions 5-6

    Grade 2: Coins, Coupons, and CombinationsInvestigation 4: Sessions 2-4: Dialogue Box, p. 120

    Putting Together and Taking Apart

    Investigation 2: Sessions 3-7Investigation 3: Sessions 2-5

    Timelines and Rhythm Patterns

    Investigation 1: Sessions 1-6

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    Geometry Standard

    In kindergarten through grade 2 all students should

    Analyze characteristics and properties of two- and three-dimensional geometric shapes anddevelop mathematical arguments about geometric relationships

    recognize, name, build, draw, compare, and sort two- and three-dimensional shapes;

    References:

    Kindergarten: Mathematical Thinking in Kindergarten

    Investigation 1: Choice Time, pp. 16-17, 22, 23

    Making Shapes and Building BlocksInvestigations 1, 2, 3, 4, 5

    Shapes Teacher Tutorial, pp. 117-154

    Grade 1: Mathematical Thinking at Grade 1Investigation 1: Sessions 1-4

    Building Number Sense

    Investigation 1: Sessions 1-9Investigation 2: Sessions 6-8

    Investigation 3: Sessions 3-7Investigation 4: Sessions 6-9

    Survey Questions and Secret Rules

    Investigation 1: Sessions 1-2Investigation 2: Sessions 3-4

    Quilt Squares and Block Towns

    Investigation 1: Sessions 1-15Investigation 2: Sessions 1-10

    Investigation 3: Sessions 1-7

    Number Games and Story ProblemsInvestigation 1: Sessions 1-6

    Investigation 3: Sessions 6-8

    Grade 2: Mathematical Thinking at Grade 2

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    Investigation 3: Sessions 1-6

    Shapes, Halves, and Symmetry

    Investigation 1: Sessions 1-8Investigation 2: Sessions 1-6

    Investigation 3: Sessions 1-8Investigation 4: Sessions 1-7

    describe attributes and parts of two- and three-dimensional shapes;

    References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigation 1: Choice Time, pp. 16-17, 22, 23

    Making Shapes and Building Blocks

    Investigations 1, 2, 3, 4, 5

    Shapes Teacher Tutorial, pp. 117-154

    Grade 1: Mathematical Thinking at Grade 1Investigation 1: Sessions 1-4

    Building Number Sense

    Investigation 1: Sessions 1-9Investigation 2: Sessions 6-8

    Investigation 3: Sessions 3-7Investigation 4: Sessions 6-9

    Survey Questions and Secret RulesInvestigation 1: Sessions 1-2Investigation 2: Sessions 3-4

    Quilt Squares and Block Towns

    Investigation 1: Sessions 1-15Investigation 2: Sessions 1-10

    Investigation 3: Sessions 1-7

    Number Games and Story ProblemsInvestigation 1: Sessions 1-6

    Investigation 3: Sessions 6-8

    Grade 2: Mathematical Thinking at Grade 2

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    Investigation 3: Sessions 1-6

    Shapes, Halves, and Symmetry

    Investigation 1: Sessions 1-8Investigation 2: Sessions 1-6

    Investigation 3: Sessions 1-8Investigation 4: Sessions 1-7

    investigate and predict the results of putting together and taking apart two- and three-

    dimensional shapes.

    References:

    Kindergarten: Making Shapes and Building Blocks

    Investigations 1, 2, 3, 4, 5

    Grade 1: Quilt Squares and Block TownsInvestigation 1: Sessions 2-10, 13-15

    Investigation 2: Sessions 4-10Investigation 3: Sessions 1-5

    Appendix: ShapesTutorial

    Bigger, Taller, Heavier, SmallerInvestigation 2: Sessions 2-4

    Grade 2: Mathematical Thinking at Grade 2

    Investigation 3: Sessions 3-4, 6Appendix: ShapesTutorial

    Shapes, Halves, and Symmetry

    Investigation 1: Sessions 2-8Investigation 2: Sessions 2-5

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    Specify locations and describe spatial relationships using coordinate geometry and other

    representational systems

    describe, name, and interpret relative positions in space and apply ideas about relative

    position;In addition to physical manipulation of shapes and objects, students in Kindergarten throughGrade 2 usingInvestigations in Number, Data, and Spaceapply concepts of relative positions

    in space through the use of Shapes. Shapesis a software program that allows students toconstruct and manipulate geometric shapes, see objects move according to rules they specify,

    and explore rotation and reflection. Students in Grade 2 also use Geo-Logo software, whichenables students to extend their investigations to coordinate geometry and angles.

    References:

    Kindergarten: Making Shapes and Building Blocks

    Investigations 2, 3, 4

    Grade 1: Building Number SenseInvestigation 1: Sessions 1-9

    Investigation 2: Sessions 6-8

    Quilt Squares and Block TownsInvestigation 1: Sessions 8-10

    Investigation 3: Sessions 6-7Appendix: ShapesTutorial

    Number Games and Story Problems

    Investigation 1: Sessions 1-3, 6

    Grade 2: Mathematical Thinking at Grade 2Appendix: ShapesTutorial

    How Long? How Far?

    Investigation 2: Sessions 2-8Ongoing Excursion: Geo-Logo: Shapes and Pictures

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    describe, name, and interpret direction and distance in navigating space and apply ideas

    about direction and distance;

    In addition to physical movement and measurement of shapes and objects, students in

    Kindergarten through Grade 2 usingInvestigations in Number, Data, and Spaceapply

    concepts of direction and distance through the use of a software program entitled Shapes. Thisprogram allows students to construct and manipulate geometric shapes, see objects moveaccording to rules they specify, and explore rotation and reflection. Students in Grade 2 also

    use Geo-Logo software, which enables students to extend their investigations to coordinategeometry and angles.

    References:

    Kindergarten: Making Shapes and Building Blocks

    Investigation 2, 3, 4

    Grade 1: Quilt Squares and Block TownsInvestigation 3: Sessions 6-7

    Appendix: Shapes Tutorial

    Grade 2: Mathematical Thinking at Grade 2Appendix: ShapesTutorial

    Putting Together and Taking Apart

    Investigation 5: Session 8

    How Long? How Far?Investigation 1: Sessions 2-4

    Investigation 2: Sessions 1-8Ongoing Excursion: Geo-Logo: Shapes and Pictures

    find and name locations with simple relationships such as "near to" and in coordinate

    systems such as maps.

    Kindergarten students usingInvestigations in Number, Data, and Spaceuse HopscotchPaths as a means of exploring paths and relating them to patterns.

    Grade 2 students use Geo-Logosoftware to explore coordinate geometry.References:

    Kindergarten: Pattern Trains and Hopscotch PathsInvestigation 3

    Grade 1: Quilt Squares and Block Towns

    Investigation 3: Sessions 5-7

    Grade 2: Putting Together and Taking ApartInvestigation 5: Session 8

    How Long? How Far?

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    Investigation 1: Sessions 2-4Investigation 2: Sessions 1-8

    Ongoing Excursion: Geo-Logo: Shapes and Pictures

    Apply transformations and use symmetry to analyze mathematical situations

    recognize and apply slides, flips, and turns;

    Kindergarten students usingInvestigations in Number, Data, and Spaceapply slides and turnsas they visualize how a shape needs to be moved or turned in order to fit into a particular space

    or design. In addition to physical manipulation of shapes and objects, students in Kindergartenthrough Grade 2 recognize and apply slides, flips, and turns through the use of a software

    program, Shapes. This program allows students to construct and manipulate geometric shapes,see objects move according to rules they specify, and explore rotation and reflection.

    References:

    Kindergarten: Making Shapes and Building Blocks

    Investigations 2, 3

    Grade 1: Quilt Squares and Block TownsInvestigation 1: Sessions 3-6, 8-10, 13-15

    Investigation 3: Sessions 6-7Appendix: Shapes Tutorial

    Grade 2: Mathematical Thinking at Grade 2

    Appendix: ShapesTutorial

    How Long? How Far?Investigation 2: Sessions 2-8

    Ongoing Excursion: Geo-Logo: Shapes and Pictures

    recognize and create shapes that have symmetry.

    Students usingInvestigations in Number, Data, and Spaceare not formally introduced to theconcept of symmetry until Grade 2. Kindergarten and Grade 1 students explore preliminary

    skills, including the manipulation of shapes through physical manipulation, drawing, andcomputer technology, as they construct murals and create designs and drawings using basic

    shapes. They are exposed to symmetry as they examine and manipulate geometric shapes andsolids.

    References:

    Kindergarten: Making Shapes and Building Blocks

    Investigations 1, 2, 3, 4, 5

    Grade 1: Quilt Squares and Block TownsInvestigation 1: Sessions 1-15

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    Investigation 2: Sessions 1-10Investigation 3: Sessions 1-7

    Appendix: ShapesTutorial

    Grade 2: Mathematical Thinking at Grade 2

    Appendix: ShapesTutorial

    Shapes, Halves, and Symmetry

    Investigation 4: Sessions 1-7

    Use visualization, spatial reasoning, and geometric modeling to solve problems

    create mental images of geometric shapes using spatial memory and spatial visualization;

    Students in Kindergarten through Grade 2 usingInvestigations in Number, Data, and Spacecreate mental images of geometric shapes using spatial memory and spatial visualization

    throughout the course as they study geometric shapes and solids and their properties throughphysical manipulation, paper-and-pencil drawing, and the use of computer technology. For

    example, Kindergarten students use Shapes software to manipulate shapes as they visualizehow a shape needs to be moved or turned in order to fit into a particular space or design. Grade

    1 students wrap boxes at home and bring them to school, then classmates use spatial memoryand visualization as they attempt to identify the Mystery Boxes. Second graders create mental

    images of geometric shapes using spatial memory and visualization as they follow descriptionswritten by other students to build rectangles, and as they draw rectangles from memory and

    describe them in writing.References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigation 1: Choice Time, pp. 16-17, 22, 23

    Making Shapes and Building Blocks

    Investigations 1, 2, 3, 4, 5Shapes Teacher Tutorial, pp. 117-154

    Grade 1: Mathematical Thinking at Grade 1Investigation 1: Sessions 1-4

    Building Number Sense

    Investigation 1: Sessions 1-9Investigation 2: Sessions 6-8

    Investigation 3: Sessions 3-7Investigation 4: Sessions 6-9

    Survey Questions and Secret RulesInvestigation 1: Sessions 1-2

    Investigation 2: Sessions 3-4

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    Quilt Squares and Block TownsInvestigation 1: Sessions 1-15

    Investigation 2: Sessions 1-10Investigation 3: Sessions 1-7

    Number Games and Story ProblemsInvestigation 1: Sessions 1-6Investigation 3: Sessions 6-8

    Grade 2: Mathematical Thinking at Grade 2

    Investigation 3: Sessions 1-6Appendix: ShapesTutorial

    Shapes, Halves, and SymmetryInvestigation 1: Sessions 1-8

    Investigation 2: Sessions 1-6Investigation 3: Sessions 1-8

    Investigation 4: Sessions 1-7

    recognize and represent shapes from different perspectives;

    Students in Kindergarten through Grade 2 usingInvestigations in Number, Data, and Spacerecognize and represent shapes from different perspectives throughout the course as they study

    geometric shapes and solids and their properties through physical manipulation, paper-and-pencil drawing, and the use of computer technology. For example, Kindergarten students

    match a three-dimensional block to a two-dimensional outline of one of the blocks faces.Grade 1 students draw two-dimensional representations of three-dimensional objects, and

    construct three-dimensional objects from two-dimensional representations. Second graderscreate two- and three-dimensional symmetrical structures with mirrors, paper folding, and

    geoblocks.References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigation 1: Choice Time, pp. 16-17, 22, 23

    Making Shapes and Building Blocks

    Investigations 1, 2, 3, 4, 5

    Shapes Teacher Tutorial, pp. 117-154

    Grade 1: Mathematical Thinking at Grade 1Investigation 1: Sessions 1-4

    Building Number Sense

    Investigation 1: Sessions 1-9Investigation 2: Sessions 6-8

    Investigation 3: Sessions 3-7Investigation 4: Sessions 6-9

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    Shapes, Halves, and Symmetry

    Investigation 1: Sessions 2-8Investigation 2: Sessions 3-6

    Investigation 3: Sessions 1-8

    Putting Together and Taking ApartInvestigation 5: Session 8

    How Long? How Far?

    Investigation 1: Sessions 1-8Investigation 2: Sessions 1-8

    Ongoing Excursion: Geo-Logo: Shapes and Pictures

    recognize geometric shapes and structures in the environment and specify their location.

    References:Kindergarten: Making Shapes and Building Blocks

    Investigations 1, 2, 3

    Grade 1: Quilt Squares and Block TownsInvestigation 1: Session 1

    Investigation 3: Sessions 3-4

    Grade 2: Shapes, Halves, and SymmetryInvestigation 1: Session 1

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    Measurement Standard

    In kindergarten through grade 2 all students should

    Understand measurable attributes of objects and the units, systems, and processes of

    measurement

    recognize the attributes of length, volume, weight, area, and time;

    In addition to the following references, each unit of study inInvestigations in Number, Data,

    and Spaceincludes a feature entitled, About Classroom Routines, which includes a sectionrelated to changes over time. In Kindergarten this section is entitled Calendar and contains

    activities related to the passage of time. In Grade 1 this section is entitled Understanding Timeand Changes and contains ideas for helping students develop an understanding of time-related

    ideas such as sequencing events and understanding relationships among time periods. In Grade

    2 this section is entitled Time and Time Again and contains suggestions for activities to helpstudents develop an understanding of time-related ideas such as sequencing events, the passageof time, duration of time periods, and identifying important times in their day.

    References:

    Kindergarten: Mathematical Thinking in Kindergarten

    Investigation 3

    Collecting, Counting, and MeasuringInvestigation 3

    Making Shapes and Building Blocks

    Investigations 2, 3, 4

    How Many in All?

    Investigation 1

    Grade 1: Building Number Sense

    Investigation 3: Sessions 3-7

    Survey Questions and Secret RulesInvestigation 3: Sessions 1-3

    Quilt Squares and Block Towns

    Investigation 3: Sessions 6-7

    Bigger, Taller, Heavier, Smaller

    Investigation 1: Sessions 1-6Investigation 2: Sessions 1-7

    Investigation 3: Sessions 1-5

    Grade 2: Shapes, Halves, and Symmetry

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    Investigation 1: Sessions 2-6Investigation 2: Sessions 2-5

    How Long? How Far?

    Investigation 1: Sessions 1-8

    Investigation 2: Sessions 1-8

    Timelines and Rhythm Patterns

    Investigation 1: Sessions 1-6Investigation 2: Sessions 4-5

    compare and order objects according to these attributes;

    References:

    Kindergarten: Collecting, Counting, and MeasuringInvestigation 3

    How Many in All?

    Investigation 1

    Grade 1: Building Number SenseInvestigation 3: Sessions 3-4

    Quilt Squares and Block Towns

    Investigation 3: Sessions 6-7

    Bigger, Taller, Heavier, SmallerInvestigation 1: Sessions 1-6

    Investigation 2: Sessions 1-7Investigation 3: Sessions 1-5

    Grade 2: Shapes, Halves, and Symmetry

    Investigation 2: Session 2

    How Long? How Far?

    Investigation 1: Sessions 1-8Investigation 2: Sessions 4-8

    Timelines and Rhythm Patterns

    Investigation 1: Sessions 1-6

    understand how to measure using nonstandard and standard units;

    References:

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    Kindergarten: Mathematical Thinking in KindergartenInvestigation 3

    Collecting, Counting, and Measuring

    Investigation 3

    How Many in All?Investigation 1

    Grade 1: Building Number SenseInvestigation 3: Sessions 3-7

    Quilt Squares and Block Towns

    Investigation 3: Sessions 6-7

    Bigger, Taller, Heavier, SmallerInvestigation 1: Sessions 1-6

    Investigation 2: Sessions 1-7Investigation 3: Sessions 1-5

    Grade 2: Shapes, Halves, and Symmetry

    Investigation 1: Sessions 2-6Investigation 2: Sessions 4-5

    How Long? How Far?

    Investigation 1: Sessions 1-8Investigation 2: Sessions 1-8

    select an appropriate unit and tool for the attribute being measured.

    References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigation 3

    Collecting, Counting, and Measuring

    Investigation 3

    How Many in All?Investigation 1

    Grade 1: Building Number SenseInvestigation 3: Sessions 3-7

    Quilt Squares and Block TownsInvestigation 3: Sessions 6-7

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    Bigger, Taller, Heavier, SmallerInvestigation 1: Sessions 1-6

    Investigation 2: Sessions 1-7Investigation 3: Sessions 1-5

    Grade 2: Shapes, Halves, and SymmetryInvestigation 1: Sessions 2-6Investigation 2: Sessions 4-5

    How Long? How Far?

    Investigation 1: Sessions 1-8Investigation 2: Sessions 1-8

    Apply appropriate techniques, tools, and formulas to determine measurements

    measure with multiple copies of units of the same size, such as paper clips laid end to end;References:

    Kindergarten: Collecting, Counting, and MeasuringInvestigation 3

    How Many in All?

    Investigation 1

    Grade 1: Building Number Sense

    Investigation 3: Sessions 3-4

    Bigger, Taller, Heavier, SmallerInvestigation 1: Sessions 5-6

    Investigation 2: Sessions 2-7Investigation 3: Sessions 3-5

    Grade 2: How Long? How Far?

    Investigation 1: Sessions 2-8

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    use repetition of a single unit to measure something larger than the unit, for instance,

    measuring the length of a room with a single meterstick;

    Kindergarten students usingInvestigations in Number, Data, and Spacequantify length

    measurements using a repeating nonstandard unit. The following reference for Kindergarten is

    to the estimation of a measurement of something much larger than the measuring unit, beforeactually measuring with multiple copies of units of the same size to confirm the estimate.Grade 1 students measure the capacity of a cup by repeatedly filling a spoon with sand and

    emptying it into the cup. They also measure distances using their hands and feet. Secondgraders measure the length of their classroom with movable sets of linked cubes.

    References:

    Kindergarten: How Many in All?

    Investigation 1

    Grade 1: Bigger, Taller, Heavier, Smaller

    Investigation 2: Session 1Investigation 3: Session 2

    Grade 2: How Long? How Far?

    Investigation 1: Session 8

    use tools to measure;

    References:

    Kindergarten: Mathematical Thinking in Kindergarten

    Investigation 3

    Collecting, Counting, and MeasuringInvestigation 3

    How Many in All?

    Investigation 1

    Grade 1: Building Number Sense

    Investigation 3: Sessions 3-7

    Quilt Squares and Block TownsInvestigation 3: Sessions 6-7

    Bigger, Taller, Heavier, SmallerInvestigation 1: Sessions 1-6Investigation 2: Sessions 1-7

    Investigation 3: Sessions 1-5

    Grade 2: Shapes, Halves, and Symmetry

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    Investigation 1: Sessions 2-6Investigation 2: Sessions 4-5

    How Long? How Far?

    Investigation 1: Sessions 1-8

    Investigation 2: Sessions 1-8

    develop common referents for measures to make comparisons and estimates.

    In addition to the following references, Kindergarten students usingInvestigations in Number,

    Data, and Spacedevelop common referents for units of time in throughout the course throughthe recurring feature, About Classroom Routines: Calendar: A Sense of Time.

    References:

    Kindergarten: Collecting, Counting, and Measuring

    Investigation 3

    How Many in All?Investigation 1

    Grade 1: Building Number Sense

    Investigation 3: Sessions 3-4

    Quilt Squares and Block TownsInvestigation 3: Sessions 6-7

    Bigger, Taller, Heavier, Smaller

    Investigation 1: Sessions 1-6Investigation 2: Sessions 1-7

    Investigation 3: Sessions 1-5

    Grade 2: How Long? How Far?Investigation 1: Sessions 1-8

    Timelines and Rhythm Patterns

    Investigation 1: Sessions 1-6

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    Data Analysis and Probability Standard

    In kindergarten through grade 2 all students should

    Formulate questions that can be addressed with data and collect, organize, and display

    relevant data to answer them

    pose questions and gather data about themselves and their surroundings;

    In addition to the following references, the end of each unit ofInvestigations in Number, Data,and Spacecontains a feature entitled About Classroom Routines. In Kindergarten this includes

    a section entitled, Todays Question, which consists of an activity involving students collecting,displaying, and interpreting data. Students may represent data using charts or graphs. The

    Grade 1 series includes a section in the appendix entitled, Exploring Data, which includes ideasfor class surveys which involve students collecting, organizing, and displaying data. Another

    section, Understanding Time and Changes, includes ideas for exploring the monthly calendarand collecting and displaying weather data. The Grade 2 series includes a section entitled,

    How Many Pockets?, which describes a long-term activity in which students collect, organize,and represent data on how many pockets everyone in class is wearing on a particular day.

    Students may use a Hundred Number Wall Chart and a Pocket Data Chart to interpret andrecord their data.

    References:

    Kindergarten: Mathematical Thinking in Kindergarten

    Investigation 1

    Counting Ourselves and OthersInvestigations 1-3

    Grade 1: Mathematical Thinking at Grade 1Investigation 5: Sessions 1-6

    Survey Questions and Secret Rules

    Investigation 2: Sessions 1-6Investigation 3: Sessions 1-3

    Investigation 4: Sessions 1-5

    Grade 2: Mathematical Thinking at Grade 2Investigation 2: Session 6

    Investigation 5: Sessions 1-6

    Coins, Coupons, and CombinationsInvestigation 1: Session 11

    Investigation 2: Sessions 2, 6, 10Investigation 5: Session 1

    Does It Walk, Crawl, or Swim?

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    Investigation 1: Sessions 1-6Investigation 2: Sessions 1-4

    Investigation 3: Sessions 1-3Investigation 4: Sessions 1-3

    Putting Together and Taking ApartInvestigation 2: Session 1

    How Long? How Far?Investigation 2: Sessions 6-8

    How Many Pockets? How Many Teeth?

    Investigation 1: Sessions 1-5Investigation 2: Sessions 1-6

    Investigation 3: Sessions 1-5

    Timelines and Rhythm PatternsInvestigation 1: Sessions 1-6

    Investigation 2: Sessions 2-3

    sort and classify objects according to their attributes and organize data about the objects;

    Kindergarten: Kindergarten students usingInvestigations in Number, Data, and Spacesort,classify, and order objects in a variety of settings. Students explore and compare the attributes

    of various geometric manipulatives, including pattern blocks and geoblocks. Students classifyand sort data. They classify shapes in the environment.

    Sample References:

    Mathematical Thinking in Kindergarten

    Investigation 1: Choice TimeInvestigation 4: Choice Time: Staircase Patterns

    Collecting, Counting, and Measuring

    Investigation 4Investigation 5

    Investigation 6

    Counting Ourselves and OthersInvestigation 1

    Investigation 2Investigation 3

    Investigation 4

    Making Shapes and Building BlocksInvestigation 1

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    Investigation 3Investigation 4

    Investigation 5

    Grade 1: In addition to the following references, every text in the Grade 1Investigations in

    Number, Data, and Spaceseries includes a description of sorting games in the appendix of thetext, entitled About Classroom Routines. The first game, entitled, Guess My Rule, requiresstudents to determine the common attribute of a set of objects. After students have become

    familiar with this game, they can play Guess My Object, in which students ask yes-or-noquestions, based on attributes, and use the process of elimination to determine which particular

    object was secretly chosen from a set of objects.

    Sample References:

    Survey Questions and Secret RulesInvestigation 1: Sessions 1-6

    Investigation 2: Sessions 3-6Investigation 4: Sessions 2-3

    Quilt Shapes and Block Towns

    Investigation 1: Sessions 11-12

    Grade 2:Second graders sort, classify, and order objects using a number of techniques in avariety of situations. For example, students sort manipulative materials based on their

    attributes. They sort and classify information. They sort two-dimensional geometric shapesand three-dimensional geometric solids. They use Venn diagrams to show relationships within

    a group of related objects.Sample References:

    Mathematical Thinking at Grade 2Investigation 1: Sessions 2-4

    Investigation 3: Sessions 1-5Investigation 5: Sessions 1-2, 4-6

    Does It Walk, Crawl, or Swim?

    Investigation 1: Sessions 1-6Investigation 2: Sessions 1-4

    Investigation 3: Sessions 1-3Investigation 4: Sessions 1-3

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    represent data using concrete objects, pictures, and graphs.

    In addition to the following references, the end of each unit ofInvestigations in Number, Data,and Spacecontains a feature entitled About Classroom Routines. In Kindergarten this includes

    a section entitled, Todays Question, which consists of an activity involving students collecting,

    representing, and interpreting data. Students may represent data using charts or graphs.Students are asked to think about what a graph represents and what it is communicating. TheGrade 1 series includes a section in the appendix entitled, Exploring Data, which includes ideas

    for class surveys which involve students collecting, organizing, and displaying data. Anothersection, Understanding Time and Changes, includes ideas for exploring the monthly calendar

    and collecting and displaying weather data. The Grade 2 series includes a section entitled,How Many Pockets?, which describes a long-term activity in which students collect, organize,

    and represent data on how many pockets everyone in class is wearing on a particular day.Students may use a Hundred Number Wall Chart and a Pocket Data Chart to interpret and

    record their data.References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigation 1

    Counting Ourselves and Others

    Investigations 1-3

    Grade 1: Mathematical Thinking at Grade 1Investigation 4: Session 4

    Investigation 5: Sessions 1-6

    Building Number SenseInvestigation 1: Sessions 5-6

    Investigation 2: Session 1: Teacher NoteInvestigation 3: Sessions 1-2

    Survey Questions and Secret Rules

    Investigation 2: Sessions 1-2, 5-6Investigation 3: Sessions 1-3

    Investigation 4: Sessions 2-5

    Number Games and Story ProblemsInvestigation 1: Session 6

    Bigger, Taller, Heavier, Smaller

    Investigation 2: Sessions 1-4

    Grade 2: Mathematical Thinking at Grade 2

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    Investigation 2: Session 6Investigation 5: Sessions 1-2

    Coins, Coupons, and Combinations

    Investigation 1: Session 11

    Investigation 2: Sessions 2, 6

    Does It Walk, Crawl, or Swim?

    Investigation 1: Sessions 1-2Investigation 3: Session 1

    Investigation 4: Sessions 2-3

    Putting Together and Taking ApartInvestigation 2: Session 1

    How Long? How Far?

    Investigation 2: Sessions 6-8

    How Many Pockets? How Many Teeth?Investigation 1: Sessions 1-5

    Investigation 2: Sessions 1-6Investigation 3: Sessions 1-5

    Timelines and Rhythm Patterns

    Investigation 1: Sessions 1-6Investigation 2: Sessions 2-3

    Select and use appropriate statistical methods to analyze data

    describe parts of the data and the set of data as a whole to determine what the data show.

    In addition to the following references, the end of each unit ofInvestigations in Number, Data,

    and Spacecontains a feature entitled About Classroom Routines. In Kindergarten this includesa section entitled, Todays Question, which consists of an activity involving students collecting,

    displaying, and interpreting data. Students may use charts or graphs to describe parts of thedata and the set of data as a whole to determine what the data show. The Grade 1 series

    includes a section in the appendix entitled, Exploring Data, which includes ideas for classsurveys which involve students collecting, organizing, displaying, and interpreting data.

    Another section, Understanding Time and Changes, includes ideas for exploring the monthlycalendar and collecting, displaying, and interpreting weather data. The Grade 2 series includes

    a section entitled, How Many Pockets?, which describes a long-term activity in which studentscollect, organize, represent, and describe data on how many pockets everyone in class is

    wearing on a particular day. Students may use a Hundred Number Wall Chart and a PocketData Chart to interpret and record their data.

    References:

    Kindergarten: Mathematical Thinking in Kindergarten

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    Investigation 1

    Counting Ourselves and OthersInvestigations 1-3

    Grade 1: Mathematical Thinking at Grade 1Investigation 4: Session 4Investigation 5: Sessions 1-6

    Building Number Sense

    Investigation 1: Sessions 5-6Investigation 2: Session 1: Teacher Note

    Investigation 3: Sessions 1-2

    Survey Questions and Secret RulesInvestigation 2: Sessions 1-2, 5-6

    Investigation 3: Sessions 1-3Investigation 4: Sessions 2-5

    Number Games and Story Problems

    Investigation 1: Session 6

    Bigger, Taller, Heavier, SmallerInvestigation 2: Sessions 1-4

    Grade 2: Mathematical Thinking at Grade 2

    Investigation 2: Session 6Investigation 5: Sessions 1-6

    Coins, Coupons, and Combinations

    Investigation 1: Session 11Investigation 2: Sessions 2, 6, 10

    Investigation 5: Session 1

    Does It Walk, Crawl, or Swim?Investigation 1: Sessions 1-6

    Investigation 2: Sessions 1-4Investigation 3: Sessions 1-3

    Investigation 4: Sessions 1-3

    Putting Together and Taking ApartInvestigation 2: Session 1

    How Long? How Far?

    Investigation 2: Sessions 6-8

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    How Many Pockets? How Many Teeth?Investigation 1: Sessions 1-5

    Investigation 2: Sessions 1-6Investigation 3: Sessions 1-5

    Timelines and Rhythm PatternsInvestigation 1: Sessions 1-6Investigation 2: Sessions 2-3

    Develop and evaluate inferences and predictions that are based on data

    discuss events related to students' experiences as likely or unlikely.

    Students using theInvestigations in Number, Data, and Spaceseries are introduced to the

    concepts of probability in Grade 3. Students in Kindergarten through Grade 2 may predictfuture events based on collected data. For example, Kindergarten students predict whether or

    not all of their sunflower seeds will germinate. Grade 1 students hypothesize about attendancedata on a most unusual day. Second graders make a hypothesis based on sampling and the

    representation of a set of mystery data.Sample References:

    Kindergarten: Counting Ourselves and OthersInvestigation 3: Dialogue Box, pp. 74-75

    Grade 1: Survey Questions and Secret Rules

    Investigation 4: Sessions 4-5

    Grade 2: How Many Pockets? How Many Teeth?Investigation 2: Session 6

    Understand and apply basic concepts of probability

    Students using theInvestigations in Number, Data, and Spaceseries are introduced to theconcepts of probability in Grade 3. Students in Kindergarten through Grade 2 may predict

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    future events based on collected data. For example, Kindergarten students predict whether ornot all of their sunflower seeds will germinate. Grade 1 students hypothesize about attendance

    data on a most unusual day. Second graders make a hypothesis based on sampling and therepresentation of a set of mystery data.

    Sample References:

    Kindergarten: Counting Ourselves and OthersInvestigation 3: Dialogue Box, pp. 74-75

    Grade 1: Survey Questions and Secret RulesInvestigation 4: Sessions 4-5

    Grade 2: How Many Pockets? How Many Teeth?

    Investigation 2: Session 6

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    Problem Solving Standard

    Instructional programs from kindergarten through grade 12 should enable all students

    to

    build new mathematical knowledge through problem solving;

    Students in Kindergarten through Grade 2 usingInvestigations in Number, Data, and Spacebuild new mathematical knowledge through problem solving throughout the course; in fact,

    this is a fundamental emphasis of the series. For example, as Kindergarten studentsinvestigate properties of two-dimensional shapes, they learn to recognize these shapes in

    their environment and develop vocabulary to describe and name two-dimensional shapes.Students in Grade 1 learn how to solve problems involving combining with unknown change.

    Second graders are introduced to the use of Venn diagrams to organize data considering twoattributes at the same time.

    Sample References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigation 2

    Pattern Trains and Hopscotch PathsInvestigation 4

    Collecting, Counting, and Measuring

    Investigation 1

    Counting Ourselves and OthersInvestigation 3

    Making Shapes and Building Blocks

    Investigation 1

    How Many in All?Investigation 4

    Grade 1: Mathematical Thinking at Grade 1

    Investigation 4: Sessions 2-3

    Building Number Sense

    Investigation 2: Sessions 4-5

    Survey Questions and Secret RulesInvestigation 1: Session 6

    Quilt Squares and Block Towns

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    Investigation 1: Sessions 3-6

    Number Games and Story ProblemsInvestigation 3: Session 9

    Bigger, Taller, Heavier, SmallerInvestigation 1: Sessions 5-6

    Grade 2: Mathematical Thinking at Grade 2Investigation 1: Sessions 2-3

    Coins, Coupons, and Combinations

    Investigation 3: Sessions 4-5

    Does It Walk, Crawl, or Swim?Investigation 1: Session 6

    Shapes, Halves, and Symmetry

    Investigation 3: Sessions 7-8

    Putting Together and Taking ApartInvestigation 4: Session 2

    How Long? How Far?

    Investigation 2: Sessions 6-8

    How Many Pockets? How Many Teeth?Investigation 2: Sessions 1-2

    Timelines and Rhythm Patterns

    Investigation 1: Sessions 1-2

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    solve problems that arise in mathematics and in other contexts;

    Students in Kindergarten through Grade 2 usingInvestigations in Number, Data, and Spacesolve problems that arise in mathematics and in other contexts throughout the course; in fact,

    this is a fundamental emphasis of the series. For example, Kindergarten students solve story

    problems involving combining and separating. Students in Grade 1 plan and build a townusing geoblocks. Second graders explore coins and their values.Sample References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigation 3

    Pattern Trains and Hopscotch Paths

    Investigation 3

    Collecting, Counting, and MeasuringInvestigation 5

    Counting Ourselves and Others

    Investigation 2

    Making Shapes and Building BlocksInvestigation 3

    How Many in All?

    Investigation 3

    Grade 1: Mathematical Thinking at Grade 1Investigation 5: Sessions 5-6

    Building Number Sense

    Investigation 3: Session 9

    Survey Questions and Secret RulesInvestigation 3: Session 1

    Quilt Squares and Block Towns

    Investigation 3: Sessions 3-4

    Number Games and Story ProblemsInvestigation 2: Session 13

    Bigger, Taller, Heavier, Smaller

    Investigation 1: Sessions 1-2

    Grade 2: Mathematical Thinking at Grade 2

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    Investigation 4: Session 2

    Coins, Coupons, and CombinationsInvestigation 2: Session 6

    Does It Walk, Crawl, or Swim?Investigation 3: Session 1

    Shapes, Halves, and SymmetryInvestigation 1: Sessions 6-8

    Putting Together and Taking Apart

    Investigation 1: Sessions 5-6

    How Long? How Far?Investigation 1: Sessions 5-7

    How Many Pockets? How Many Teeth?

    Investigation 1: Session 1

    Timelines and Rhythm PatternsInvestigation 1: Session 3

    apply and adapt a variety of appropriate strategies to solve problems;

    Students in Kindergarten through Grade 2 usingInvestigations in Number, Data, and Space

    apply and adapt a variety of appropriate strategies to solve problems throughout the course;in fact, this is a fundamental emphasis of the series. For example, Kindergarten students

    develop a variety of strategies for counting and keeping track of quantities. Students inGrade 1 use pictures, numbers, words, and equations to solve combining and separating story

    problems. Second graders explore strategies for creating and representing symmetricalfigures.

    Sample References:

    Kindergarten: Mathematical Thinking in Kindergarten

    Investigation 1

    Pattern Trains and Hopscotch PathsInvestigation 2

    Collecting, Counting, and Measuring

    Investigation 2

    Counting Ourselves and OthersInvestigation 4

    Making Shapes and Building BlocksInvestigation 2

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    How Many in All?

    Investigation 2

    Grade 1: Mathematical Thinking at Grade 1

    Investigation 2: Session 1

    Building Number Sense

    Investigation 4: Session 10

    Survey Questions and Secret RulesInvestigation 2: Sessions 5-6

    Quilt Squares and Block Towns

    Investigation 3: Sessions 1-2

    Number Games and Story ProblemsInvestigation 3: Sessions 10-12

    Bigger, Taller, Heavier, Smaller

    Investigation 2: Sessions 5-7

    Grade 2: Mathematical Thinking at Grade 2Investigation 3: Session 6

    Coins, Coupons, and Combinations

    Investigation 1: Sessions 8-9

    Does It Walk, Crawl, or Swim?Investigation 1: Sessions 1-2

    Shapes, Halves, and Symmetry

    Investigation 4: Sessions 5-6

    Putting Together and Taking ApartInvestigation 3: Session 1

    How Long? How Far?

    Investigation 1: Session 8

    How Many Pockets? How Many Teeth?Investigation 1: Sessions 2-3

    Timelines and Rhythm Patterns

    Investigation 2: Sessions 2-3

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    monitor and reflect on the process of mathematical problem solving.

    Students in Kindergarten through Grade 2 usingInvestigations in Number, Data, and Spacemonitor and reflect on the process of mathematical problem solving throughout the course; in

    fact, this is a fundamental emphasis of the series. For example, Kindergarten students reflect

    on using different criteria to sort the same set of objects. Students in Grade 1 develop,describe, and justify techniques for comparing the capacities of containers. Second gradersobserve the structure and patterns on a hundred chart.

    Sample References:

    Kindergarten: Mathematical Thinking in Kindergarten

    Investigation 4

    Pattern Trains and Hopscotch PathsInvestigation 1

    Collecting, Counting, and Measuring

    Investigation 3

    Counting Ourselves and OthersInvestigation 1

    Making Shapes and Building Blocks

    Investigation 4

    How Many in All?Investigation 1

    Grade 1: Mathematical Thinking at Grade 1

    Investigation 3: Sessions 3-4

    Building Number SenseInvestigation 2: Session 2

    Survey Questions and Secret Rules

    Investigation 1: Sessions 1-2

    Quilt Squares and Block TownsInvestigation 1: Sessions 8-10

    Number Games and Story Problems

    Investigation 3: Session 1

    Bigger, Taller, Heavier, SmallerInvestigation 2: Sessions 2-4

    Grade 2: Mathematical Thinking at Grade 2

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    Investigation 2: Sessions 4-5

    Coins, Coupons, and CombinationsInvestigation 4: Session 1

    Does It Walk, Crawl, or Swim?Investigation 4: Session 1

    Shapes, Halves, and SymmetryInvestigation 1: Session 1

    Putting Together and Taking Apart

    Investigation 2: Session 1

    How Long? How Far?Investigation 1: Sessions 2-4

    How Many Pockets? How Many Teeth?

    Investigation 3: Session 1

    Timelines and Rhythm PatternsInvestigation 1: Session 6

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    Reasoning and Proof Standard

    Instructional programs from kindergarten through grade 12 should enable all students

    to

    recognize reasoning and proof as fundamental aspects of mathematics;

    Students in Kindergarten through Grade 2 usingInvestigations in Number, Data, and

    Spacerecognize reasoning and proof as fundamental aspects of mathematics as they employmathematical reasoning in a variety of forms and settings. Students use inductive reasoning

    as they generalize solution processes and draw conclusions from several trials or examples.They apply inductive reasoning as they sort and classify objects, identify similar attributes,

    and identify and extend patterns.Students at all grade levels reason deductively as they use models, known facts, and

    properties to draw conclusions. They reason by determining and applying relationships

    between operations on numbers, between elements in patterns, between geometric shapes andsolids, and between events in time. They apply logical reasoning to solve problemsinvolving classification and sorting of objects by one or more attributes. They use spatial

    reasoning as they visualize results of geometric transformations and identify shapes andsolids from different perspectives.

    Sample References:

    Kindergarten: Mathematical Thinking in Kindergarten

    Investigation 4

    Pattern Trains and Hopscotch PathsInvestigation 1

    Collecting, Counting, and Measuring

    Investigation 3

    Counting Ourselves and OthersInvestigation 3

    Making Shapes and Building Blocks

    Investigation 3

    How Many in All?Investigation 3

    Grade 1: Mathematical Thinking at Grade 1Investigation 3: Session 1

    Building Number Sense

    Investigation 3: Sessions 5-7Survey Questions and Secret Rules

    Investigation 3: Session 2

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    Quilt Squares and Block Towns

    Investigation 1: Sessions 13-15

    Number Games and Story Problems

    Investigation 3: Sessions 1-2

    Bigger, Taller, Heavier, Smaller

    Investigation 1: Sessions 5-6

    Grade 2: Mathematical Thinking at Grade 2Investigation 5: Sessions 1-2

    Coins, Coupons, and Combinations

    Investigation 3: Sessions 1-5

    Does It Walk, Crawl, or Swim?Investigation 2: Sessions 1-4

    Shapes, Halves, and Symmetry

    Investigation 1: Session 1

    Putting Together and Taking ApartInvestigation 2: Sessions 3-4

    How Long? How Far?

    Investigation 1: Session 1

    How Many Pockets? How Many Teeth?Investigation 1: Sessions 1-5

    Timelines and Rhythm Patterns

    Investigation 1: Session 1

    make and investigate mathematical conjectures;

    Students in Kindergarten through Grade 2 usingInvestigations in Number, Data, andSpacemake and investigate mathematical conjectures throughout the course by conducting

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    the investigations into which the curriculum is organized; in fact, this is a fundamentalemphasis of the series. For example, Kindergarten students predict what comes next in a

    pattern. Students in Grade 1 make and investigate conjectures regarding sorting rules.Second graders make conjectures regarding the identity of mystery photos.

    Sample References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigation 1

    Pattern Trains and Hopscotch PathsInvestigation 1

    Collecting, Counting, and Measuring

    Investigation 2

    Counting Ourselves and OthersInvestigation 4

    Making Shapes and Building Blocks

    Investigation 3

    How Many in All?Investigation 4

    Grade 1: Mathematical Thinking at Grade 1

    Investigation 3: Sessions 3-4

    Building Number SenseInvestigation 3: Sessions 3-4

    Survey Questions and Secret Rules

    Investigation 1: Sessions 1-2

    Quilt Squares and Block TownsInvestigation 2: Session 7

    Number Games and Story Problems

    Investigation 2: Session 2

    Bigger, Taller, Heavier, SmallerInvestigation 1: Sessions 1-2

    Grade 2: Mathematical Thinking at Grade 2Investigation 2: Sessions 4-5

    Coins, Coupons, and Combinations

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    Investigation 2: Session 1

    Does It Walk, Crawl, or Swim?Investigation 1: Sessions 1-2

    Shapes, Halves, and SymmetryInvestigation 1: Sessions 2-3

    Putting Together and Taking ApartInvestigation 2: Session 1

    How Long? How Far?

    Investigation 1: Sessions 2-4

    How Many Pockets? How Many Teeth?Investigation 2: Session 6

    Timelines and Rhythm Patterns

    Investigation 2: Session 4

    develop and evaluate mathematical arguments and proofs;

    Students in Kindergarten through Grade 2 usingInvestigations in Number, Data, andSpacedevelop and evaluate mathematical arguments and informal proofs throughout the

    course as they conduct and evaluate the investigations on which the curriculum is based. Forexample, Kindergarten students develop mathematical arguments for using one-to-one and

    two-to-one correspondences. Students in Grade 1 develop and evaluate mathematicalarguments for solving combining and separating story problems. Second graders find the

    missing part in a separating situation and record their strategies.Sample References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigation 2

    Pattern Trains and Hopscotch Paths

    Investigation 3

    Collecting, Counting, and MeasuringInvestigation 6

    Counting Ourselves and Others

    Investigation 1Making Shapes and Building Blocks

    Investigation 4

    How Many in All?Investigation 3

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    Grade 1: Mathematical Thinking at Grade 1Investigation 2: Session 1

    Building Number SenseInvestigation 4: Sessions 3-5

    Survey Questions and Secret RulesInvestigation 2: Sessions 1-2

    Quilt Squares and Block Towns

    Investigation 3: Sessions 6-7

    Number Games and Story ProblemsInvestigation 2: Session 13

    Bigger, Taller, Heavier, Smaller

    Investigation 2: Sessions 5-7

    Grade 2: Mathematical Thinking at Grade 2Investigation 2: Session 6

    Coins, Coupons, and Combinations

    Investigation 1: Session 6

    Does It Walk, Crawl, or Swim?Investigation 2: Sessions 3-4

    Shapes, Halves, and Symmetry

    Investigation 2: Sessions 4-5

    Putting Together and Taking ApartInvestigation 3: Session 2

    How Long? How Far?

    Investigation 2: Sessions 4-5

    How Many Pockets? How Many Teeth?Investigation 3: Session 5

    Timelines and Rhythm PatternsInvestigation 2: Sessions 2-3

    select and use various types of reasoning and methods of proof.

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    Students in Kindergarten through Grade 2 usingInvestigations in Number, Data, andSpacerecognize reasoning and proof as fundamental aspects of mathematics as they employ

    mathematical reasoning in a variety of forms and settings. Students use inductive reasoningas they generalize solution processes and draw conclusions from several trials or examples.

    They apply inductive reasoning as they sort and classify objects, identify similar attributes,

    and identify and extend patterns.Students at all grade levels reason deductively as they use models, known facts, andproperties to draw conclusions. They reason by determining and applying relationships

    between operations on numbers, between elements in patterns, between geometric shapes andsolids, and between events in time. They apply logical reasoning to solve problems

    involving classification and sorting of objects by one or more attributes. They use spatialreasoning as they visualize results of geometric transformations and identify shapes and

    solids from different perspectives.Sample References:

    Kindergarten: Mathematical Thinking in KindergartenInvestigation 3

    Pattern Trains and Hopscotch Paths

    Investigation 4

    Collecting, Counting, and MeasuringInvestigation 6

    Counting Ourselves and Others

    Investigation 1

    Making Shapes and Building BlocksInvestigation 5

    How Many in All?

    Investigation 2

    Grade 1: Mathematical Thinking at Grade 1

    Investigation 3: Sessions 1-6Investigation 4: Sessions 2-3, 5

    Building Number Sense

    Investigation 3: Sessions 1-8Investigation 4: Session 10

    Survey Questions and Secret RulesInvestigation 3: Sessions 2-3

    Quilt Squares and Block Towns

    Investigation 1: Sessions 13-15

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    Number Games and Story ProblemsInvestigation 1: Sessions 1-9

    Investigation 2: Sessions 2, 6-9Investigation 3: Sessions 6-8

    Bigger, Taller, Heavier, SmallerInvestigation 2: Sessions 2-7

    Grade 2: Mathematical Thinking at Grade 2Investigation 1: Session 4

    Investigation 2: Sessions 1, 6Investigation 3: Sessions 1-4, 6

    Coins, Coupons, and Combinations

    Investigation 1: Sessions 1, 4-6, 8-10Investigation 2: Sessions 1-5, 7-10

    Investigation 3: Sessions 1-5Investigation 4: Sessions 1-4

    Shapes, Halves, and Symmetry

    Investigation 1: Sessions 2-8Investigation 2: Sessions 1-3

    Investigation 3: Sessions 3-5Investigation 4: