Meghan Hearn mhearn@hcpss.org

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Mathematics in the Elementary School:EDU 592

Ground Rules

Manage Personal TechnologyBe PunctualAssignments are due on the due dateOne person talking at a timeRespectful listeningBe respectful of opposing opinionsContact me with any questions or concerns

100’s Chart Tic-Tac-Toe

Let’s play.

Think about the math you need to know and understand to play this game while you play.

Tic-Tac-Toe

Draw a 3X3 gridDecide who will go first. Each player chooses a different colored pencil.First player choose any number from 1 to 100 and place it anywhere in the grid.Pretend this is a piece cut from a hundreds chart and play regular Tic-Tac-Toe.

Describe

What skills do your students need to complete this task?

What math concepts do they need to understand?

What is Number Sense?

• Understanding numbers, ways of representing numbers, relationships among numbers, and number systems

• Understanding meanings of operations and how they relate to one another

• Computing fluently and make reasonable estimates

» (NCTM 2010)

• Developing a sense of whole numbers and representing and using them in flexible ways, including relating, composing, and decomposing numbers

• Connecting number words and numerals to the quantities they represent, using various physical models and representations

NCTM 2010

• Counting with understanding and recognizing "how many" in sets of objects

• Using multiple models to develop initial understandings of place value and the base-ten number system

• Developing understanding of the relative position and magnitude of whole numbers and of ordinal and cardinal numbers and their connections

NCTM 2010

Number Sense

Number sense is an understanding of number concepts, place value, and computation.

Losq (2005)

What are the big components of number sense?

Connections: Numbers in our world.

Counting and Estimating

Number Relations

Compose and Decompose values

Landmark Numbers

Place Value