# 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.