For the student For the teacher

Teacher Edition

Math on the Spot Video Tutor Online Assessment

System

Soar to Success Math Online Intervention

iTools Virtual Manipulatives

Digital ManagementCenter organizes program resources by TEKS!

Interactive Student Edition provides students

with an interactive learning environment!

Resources

e

How can skip counting by tens help to count objects

in a set ?

Lesson OpenerMaking ConnectionsInvite children to tell you what they know about skip counting.

How is skip counting different from counting by ones? (Possible answer: Every number is counted when counting by ones. Only some numbers are counted when skip counting.)

Using the Digital LessonEncourage children to model the problem in the lesson by making 6 connecting cube trains, each train 10 cubes long. Relate the number of cubes in each train to the number of flowers in each flowerpot.

Learning TaskDirect children’s attention to the groups of flowers.

• How many groups of flowers are there? (6)

• How many flowers are in each group? (10)

• How can you find the number of flowers in all? (Possible answer: Count the flowers one by one.)

• What is an easier way in which Avery can count the number of flowers? (Possible answer: skip count)

Literacy and Mathematics Choose one or more of the following activities.

• Invite children to draw pictures that show skip counting by tens. Offer suggestions such as pictures of dimes or filled ten frames. Encourage them to write below the pictures the number of groups and the number of items in each group.

• Have children write a story about a group of children who each have ten stars on a class chart.

Texas Essential Knowledge and Skills

Algebraic Reasoning—1.5.B Skip count by twos, fives, and tens to determine the total number of objects up to 120 in a set

MATHEMATICAL PROCESSES1.1.C Select tools, technology, and techniques1.1.F Analyze mathematical relationships1.1.G Display, explain, and justify mathematical ideas and arguments

Are You Ready?Access Prior KnowledgeUse the Are You Ready? 10.5 in the Assessment Guide to assess children’s understanding of the prerequisite skills for this lesson.

Vocabulary

Go to Multimedia eGlossary at thinkcentral.com

MaterialsMathBoard

10.5 Skip Count by Tens How can skip counting by tens help to count objects in a set?Essential Question?

Lesson 10.5 387A

ExploreExplore

Mathematical ProcessesMath Talk

Essential Question?

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

Algebraic Reasoning—1.5.B

MATHEMATICAL PROCESSES1.1.C, 1.1.F, 1.1.G

Skip Count by Tens10.5How can skip counting by tens help to count objects in a set?

FOR THE TEACHER • Read the following problem. How many crayons would there be in 12 groups of 10 crayons?

Explain When would it be useful to count

by tens?

Skip count by tens. Write to show how many crayons.

Name

10 —

Math Talk: Possible answer: It is useful to count by tens when objects are packaged in sets of ten.

20 —

30 —

40 —

50 —

60 —

70 —

80 —

90 —

100 —

110 —

120 —

Module 10 three hundred eighty-seven 387

English Language Learners Language SupportELL

ELPS 1.B.1, 2.I.5, 3.D.2Leveled Activities ELPS

Beginning: Activity 50 2.D.1, 4.F.1, 4.F.9

Intermediate: Activity 22 1.A.1, 3.G.1, 4.D

Advanced: Activity 3 2.I.3, 2.I.5, 4.F.2

Advanced High: Activity 48 3.G.2, 4.E, 4.F.6, 4.F.7

thinkcentral.com for the ELL Activity Guide containing these leveled activities.

ExploreRead the following problem aloud.

How many crayons would there be in 12 groups of 10 crayons?

Read the following questions aloud.

• How many crayons in each group? 10

• What number comes first when skip counting by tens? 10

• How many groups of ten are there? 12

• How many crayons are there? 120

Strategy: Model ConceptsMaterials: paper, colored pencils

• Have children imagine that they are having a party. Explain that each child will bring 10 balloons.

• Have each child draw the 10 balloons they will bring. If there are more than 12 students in the class, divide the class into smaller groups.

• Have the class show their drawings and count the total number of balloons that the class or each group will have for the party by counting by tens. Monitor English learner’s pronunciation and model numbers that they have difficulty saying.

Verbal / VisualWhole Class

Math Talk Use Math Talk to focus on children’s understanding of skip counting by tens.

Mathematical Processes

387 Module 10

Model and DrawModel and Draw

Share and ShowShare and Show

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

1.

Skip count. Count the roses by tens. Write how many.

Skip count the toes by tens to find how many.

How many are you counting each time?

THINKWhat is the best way to

count these objects?

10 —

20 —

30 —

40 —

50 —

60 —

70 —

80 —

90 —

100 —

10 —

20 —

30 —

40 —

50 —

60 —

70 —

80 —

90 —

388 three hundred eighty-eight

Go to Go to thinkcentral.com for additional enrichmentactivities in the Enrich Activity Guide.

Enrich

1

2

3

a child misses the checked exercise(s)

Quick Check

IF

THENDifferentiate Instruction withRtI Tier 1 Lesson 56

Model and DrawWork through the model with children. Explain that they will use skip counting by tens to count the toes on a pair of feet.

• How many toes are in the first pair of feet? 10

• What number will you start with when counting by tens? 10

• What number comes next when skip counting by tens? 20

• How many toes did you count? 100

Share and ShowEncourage children to model each problem as they complete the exercises.

Use the checked exercise(s) for Quick Check.Children should use their MathBoards to show their solutions to these problems.

Materials: counters, cubes

• Display and read the following word problem. Madison bought 6 packs of crayons. Each pack has 10 crayons. She gives 2 crayons to her brother. How many crayons does Madison have left? 58 crayons

• Have children work in pairs to solve the problem. They can use counters or cubes to help them.

• Ask partners to explain how they found their answers.

Logical / MathematicalPartners

COMMON ERRORSError Children may not be able to count by tens.

Springboard to Learning Have children use base ten blocks to help with skip counting by tens.

CE

Lesson 10.5 388

Problem SolvingProblem Solving

Name

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

2.

110 — grapes

3.

Skip count. Write how many.

Use skip counting by tens to solve. Write or draw to explain.

4. Vanessa swims 10 laps a day. How many laps does she swim in 5 days? 50 — laps

5. Multi-Step There are 10 pencils in a packet. Justin has 6 packets. He buys 3 more packets. How many pencils does he have? 90 — pencils

80 — paintbrushes

Module 10 • Lesson 5 three hundred eighty-nine 389

1

© H

ou

gh

ton

Mif

flin

Har

cou

rt P

ub

lish

ing

Co

mp

any

Name

1.5.B

You can skip count by tens. Write to show how many cubes.

10, 20, 30, 40, 50, 60

Skip count. Count the marbles in the bags by tens. Write how many.

1.

10, 20, , ,

Skip Count by TensOBJECTIVE Skip count by tens to count objects in a set up to 120.

LESSON 56

10 10 10 10 10

40 5030

Algebraic Reasoning 111 Enrich© Houghton Mifflin Harcourt Publishing Company

E52

Name Enrich 52

Skip Count RaceFollow the path of each child.Count by twos, fi ves, or tens. Write the missing numbers.

Writing and Reasoning Which numbers are on every path?

10, 20, 30, 40, 50, 60, 70, 80, 90, 100

44 6 10 20

50

60

90

14

2838

40

3546

54

74

82 88 98

64

8065

28

512 16 18

10

2224

30

40263032

1520

25

3436

42 44 48 52

56586266687072

304045

5055 60 70 75 85 90 95

7080

96 1009492908684807876

1

2

3

Problem SolvingProblems

These problems require children to use higher order thinking skills and/or multiple steps to solve the problems.

For Exercise 4, children will need to use mental math to skip count by tens to 50. Then have children write or draw to explain their answer. For Exercise 5, children will need to identify two steps to solve the problem.

Go DeeperTo extend thinking, ask children how many pencils Justin would have if he bought 3 more packets.

Enrich 52RtI Tier 1 Lesson 56

Math on the Spot Video Tutor

Through the Math on the Spot Video Tutor, children will be guided through an interactive solving of this type of H.O.T. problem. Use this video to also help children solve the H.O.T. problem in the Interactive Student Edition. With these videos and the H.O.T. problems, children will build skills needed in the TEXAS assessment.

MV

Math on the Spot videos are in theInteractive Student Edition and atthinkcentral.com.

389 Module 10

Daily Assessment TaskDaily Assessment Task

Mathematical Processes

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

Choose the correct answer.

6. Analyze Cody wants to make 11 trays of 10 tortillas. Skip count by tens. How many tortillas will he make?

21 110 100

7. Jaimie uses base ten blocks to show a number. Skip count by tens. What is the number shown?

10

100

120

8. Multi-Step There are 10 tables in a room. Each table has 10 seats. Six tables are full. No one is sitting at the other tables. How many seats are empty?

80 40 60

9. TEXAS Test Prep Which number comes after 110 when skip counting by tens?

120 80 100

TAKE HOME ACTIVITY • Have your child explain how he or she would count how many objects are in 12 packets containing 10 objects each.

390 three hundred ninety

THENIF

YES

NO

Daily Assessment Task 1

2

3

Games

Differentiated Centers Kit

TEXAS Test Prep CoachTest Prep Coach helps teachers to identify common errors that children can make.

If children selected:

• 80, they do not understand the concept of skip counting by tens.

• 100, they counted backward by tens.

Essential Question? WriteMathWriteMath

How can skip counting by tens help to count objects in a set? Possible answer: It is easier to count large amounts by tens rather than by ones.

• Enrich 52

• Homework and Practice Lesson 10.5

Can children skip count by tens?

• Soar to Success MathWarm-Up 31.07, 33.09

ActivitiesDouble DigitChildren complete the purple Activity Card 2 by modeling skip counting by 10s.

Games10 AheadChildren recognize numerical patterns.

Lesson 10.5 390

Lesson CheckLesson CheckTEXAS Test Prep

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

• Im

age

Cred

its: (

t) ©

Artv

ille/

Getty

Imag

es R

oyal

ty F

ree

Choose the correct answer.

3. Char’s mom is making cupcakes. She can make 10 cupcakes with one pan. She makes 12 pans of cupcakes. How many cupcakes did Char’s mom make?

120 100 18

4. Paul counts his pennies. He draws a line for each group of 10 pennies he counts.How many pennies did Paul count?

80 100 90

5. Multi-Step There are 10 party favors in each bag. Lonni buys 7 bags. Then he buys 3 more bags. How many favors did Lonni buy?

70 100 30

6. Write the number that comes after 100 when skip counting by tens.

110 —

392 three hundred ninety-two

Problem SolvingProblem Solving

© H

ough

ton

Miff

lin H

arco

urt P

ublis

hing

Com

pany

• Im

age

Cred

its:

Name

Homeworkand Practice

1.

Skip count. Count the fingers on the gloves by tens. Write how many.

Skip Count by Tens10.5

Algebraic Reasoning—1.5.BMATHEMATICAL PROCESSES 1.1.C, 1.1.F, 1.1.G

10 —

20 —

30 —

40 —

Use skip counting by tens to solve.Write or draw to explain.

2. Jason runs 10 laps around the track each day. How many laps does he run in 5 days? 50 — laps

50 —

60—

70—

80 —

90 —

100 —

110 —

120 —

Check children’s drawings or explanations.

Module 10 three hundred ninety-one 391

555555555

Homework and PracticeUse the Homework and Practice pages to provide children with more practice on the concepts and skills of this lesson.

391-392 Module 10