# Lesson 9 The Birds

• Let’s solve multiplication problems.

## Warm-up Notice and Wonder: For the Birds

What do you notice? What do you wonder?

## Activity 1 Home is Where the Bird Lives

Different types of birds use different types of houses. The table gives you the recommended side lengths for birdhouses of various species.

Estimate a possible volume for each birdhouse. Be prepared to explain your reasoning.

type of bird

side lengths of floor

height

volume estimate

4 in by 4 in

6 to 10 in

wood duck

10 in by 18 in

10 to 24 in

barn owl

10 in by 18 in

15 to 18 in

6 in by 6 in

12 to 15 in

bluebird

5 in by 5 in

6 to 12 in

swallow

6 in by 6 in

6 to 8 in

## Activity 2 What is the Volume?

Use the criteria from the table to determine the recommended range of volumes for each type of birdhouse.

type of bird

side lengths of floor

height

range of volume

4 in by 4 in

6 to 10 in

wood duck

10 in by 18 in

10 to 24 in

barn owl

10 in by 18 in

15 to 18 in

6 in by 6 in

12 to 15 in

bluebird

5 in by 5 in

6 to 12 in

swallow

6 in by 6 in

6 to 8 in

## Problem 1

The recommended side lengths for a birdhouse for a yellow-bellied sapsucker are 13 cm by 13 cm for the floor and a height of 31 to 38 cm. What are the smallest and largest volumes for these birdhouses? Explain or show your reasoning.