Lesson 6 Compose and Decompose Shapes

    • Let’s make shapes with equal-size smaller shapes.

Warm-up Notice and Wonder: A Picture of Shapes

What do you notice? What do you wonder?

Figure composed of pattern blocks.

Activity 1 Many Ways to Compose Shapes

Mai used pattern blocks to make this design. Work with a partner to make the same design without using any yellow hexagons.

Butterfly composed of a variety of pattern block shapes.

Activity 2 Compose Shapes with Equal-size Pieces

Problem 1

What is the same? What is different?

Shape composed of 4 pattern block triangles.
Figure composed of pattern blocks.
Diagram. Rectangle composed of pattern blocks.

Problem 2

  • Compose 3 different shapes using 2, 3, or 4 of the same equal-size shape.

  • Show the outline of each block on the grid paper.

  • Name each shape and explain how you composed it.

  1. I used

    • to compose a .

  2. I used

    • to compose a .

  3. I used

    • to compose a .

Practice Problem

Problem 1

Here is a pattern block shape Lin made.

Shape made of pattern blocks.

  1. Describe the blocks Lin used to make her shape.

  2. Build Lin’s shape using only equal-size shapes.