# Section A: Practice Problems Compose and Count with Flat Shapes

## Section Summary

Details

In this section, we put together pattern blocks to fill in puzzles and make shapes.

We wrote numbers to show how many pattern blocks we used and figured out which pattern blocks we used more of.

There are more

than

yellow hexagons

red trapezoids.

There are fewer

than

red trapezoids

yellow hexagons.

We matched equations to pattern block shapes and to story problems.

Kiran put together 5 pattern blocks to make a shape.
Jada put 2 more pattern blocks on Kiran’s shape.

How many pattern blocks are in Kiran and Jada’s shape?

We showed many different ways to make 10 using different types of pattern blocks.

## Problem 1 (Lesson 1)

1. Fill in the puzzle using only triangle pattern blocks.

2. How many pattern blocks did you use?

3. Now fill in the puzzle using any pattern blocks you choose.

4. How many pattern blocks did you use?

## Problem 2 (Lesson 2)

1. Fill in the puzzle using only green triangle and blue rhombus pattern blocks.

2. Did you use more

or

blocks?

green triangle

blue rhombus

Circle the shape that you used more of.

3. Fill in the puzzle a different way using only green triangle and blue rhombus pattern blocks.

4. Did you use more

or

blocks?

green triangle

blue rhombus

Circle the shape that you used more of.

## Problem 3 (Lesson 3)

Mai built this shape.

1. How many

blocks did Mai use?

2. How many

blocks did Mai use?

## Problem 4 (Lesson 4)

Build a shape with pattern blocks that matches the equation.

## Problem 5 (Lesson 5)

Lin put 8 pattern blocks together to make a shape.
Then Lin took away 3 of the pattern blocks.
How many pattern blocks are in Lin’s shape now?

## Problem 6 (Lesson 6)

Clare used 10 pattern blocks to make a puzzle.
She used trapezoids and triangles.
How many trapezoids did Clare use?
Then how many triangles did Clare use?

## Problem 7 (Exploration)

1. Fill in the pattern block puzzle.

2. How many pattern blocks did you use?

3. Can you fill the puzzle using 10 pattern blocks?

## Problem 8 (Exploration)

1. Fill in the puzzle.
Use only 10 pattern blocks, some red trapezoids and some blue rhombuses.

2. Write numbers to show how many blocks you used.

I used trapezoids and rhombuses.

3. Can you fill in the puzzle with a different number of red trapezoid and blue rhombus blocks?
Use only 10 pattern blocks, some red trapezoids and some blue rhombuses.