Illustrative Mathematics | v.360 Curriculum

Problem 1

ForLesson 2: Count 2 Groups of Images

There are

squares.

There are

triangles.

There are

shapes.

Problem 2

ForLesson 3: Count 2 Groups of Scattered Images

Orange pattern blocks. Green pattern blocks.

There are

shapes.

There are

squares.

There are

triangles.

Problem 3

ForLesson 4: Add with Objects

Count 6 counters.
Add 1 more.

There are

counters.

Count 4 counters.
Add 1 more.

There are

counters.

Count 8 counters.
Add 1 more.

There are

counters.

Problem 4

ForLesson 5: Subtract with Objects

Count 8 counters.
Take away 2.

There are

counters.

Count 6 counters.
Take away 2.

There are

counters.

Count 4 counters.
Take away 2.

There are

counters.

Problem 5

Exploration

Use a full 5-frame.

Player 1: roll a cube on the number mat.

Take away or add counters while Player 2 is not looking.

Player 2 finds out what Player 1 did.

Take turns.

Problem 6

Exploration

Roll a cube.
Count that many counters.

Roll a cube again.
Count that many counters.
How many do you have now?

Problem 7

Exploration

Pick a number from the list.

2

7

6

3

Solve the problem you made.

Count 8 counters.

Take away \(\underline{\hspace{1 cm}}\) counters.

How many are left?

Try again.

Will your answer be the same or different?
Why?

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Student Handouts

Count to Add and Subtract

Practice

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

Problem 7