# Section A: Practice Problems Flat and Solid Shapes

## Section Summary

Details

We described and named shapes.

This shape is a triangle because it has 3 straight sides and 3 corners.

These shapes are all rectangles because they have 4 straight sides and 4 square corners.

We built larger shapes from smaller shapes.

Name each shape.

## Problem 2 (Pre-Unit)

Color in all of the triangles.
Cross out all of the rectangles.

## Problem 3 (Pre-Unit)

Cross out all of the circles.

## Problem 4 (Lesson 1)

Jada felt a shape in a bag.
She felt a point and a curve.
Circle the shape that could be in the bag.

## Problem 5 (Lesson 2)

This is the tallest skyscraper in the world.

Use the blocks to build a shape that looks like the skyscraper.

## Problem 6 (Lesson 3)

Here is how Diego sorted some shape cards.

Draw each shape where it belongs on Diego’s chart.

## Problem 7 (Lesson 4)

Here is a shape.

1. Draw the shape on dot paper.

2. Describe the shape.

## Problem 8 (Lesson 5)

Is this shape a triangle? Why or why not?

## Problem 9 (Lesson 6)

1. Draw 2 different rectangles and 2 different squares.

2. How are the shapes the same? How are they different?

## Problem 10 (Lesson 7)

1. Use pattern blocks to fill the outline in different ways.

2. Write the number of pattern blocks you used for each way.

## Problem 11 (Exploration)

1. Choose an object in the classroom or outside and use the geoblocks to build the object.

2. Share your object with a partner and try to guess what your partner built.

## Problem 12 (Exploration)

1. What is the smallest number of pattern blocks you can use to fill in the puzzle?

2. What is the largest number of pattern blocks you can use to fill in the puzzle?

3. Can you fill in the puzzle using exactly 12 pattern blocks?