# Lesson 6 Rectangles and Squares

Let’s learn the names of some more shapes.

## Warm-up What Do You Know About …?

Name all you know about triangles.

## Activity 1 Sort Rectangles

Let’s put the shapes into 2 groups.

Rectangle

Not a Rectangle

## Activity 2 Compare Length of Rectangles

## Problem 1

## Problem 2

Circle the rectangle that is

**longer**.Circle the rectangle that is shorter. Tell your partner how you know which rectangle is shorter.

Circle the rectangle that is

**longer**. Tell your partner how you know which rectangle is longer.Circle the rectangle that is shorter. Tell your partner how you know which rectangle is shorter.

## Activity 3 Centers: Choice Time

Choose a center.

Counting Collections

Which One

Picture Books

Bingo

Shake and Spill

## Practice Problem

## Problem 1

Color in the rectangles.

Cross out the shapes that are not rectangles.