# Lesson 1 Measure in Halves of an Inch

Let’s measure the length of objects around the room.

## Warm-up What Do You Know About …?

What do you know about inches?

## Activity 1 Measure Around the Room

Use the ruler from your teacher to measure the length of objects in the room. Be prepared to discuss your reasoning.

object | length (inches) |
---|---|

## Activity 2 Partition Inches into Halves

You will need one ruler from an earlier activity.

Work with your partner to partition every inch on the ruler into halves of an inch.

Use the ruler marked with halves of an inch to measure some lengths around the room.

object | length (inches) |
---|---|

## Practice Problem

## Problem 1

Find the length of each pencil.