# Lesson 15 Estimation Exploration

Let’s create an Estimation Exploration.

## Warm-up Estimation Exploration: Umbrellas

How many umbrellas are there?

Record an estimate that is:

too low | about right | too high |
---|---|---|

## Activity 1 Design Your Estimation Exploration

Find an image that would encourage your classmates to estimate the total number of an item using strategies for multi-digit multiplication.

Fill in the possible estimates students might make.

Record an estimate that is:

too low | about right | too high |
---|---|---|

## Activity 2 Facilitate Your Estimation Exploration

Display your image for your classmates.

Ask them, “What is an estimate that’s too high?” “Too low?” “About right?”

Give them a minute of quiet think time.

Give them a minute to discuss together.

Have them share estimates.

Record their ideas.