# Measuring Up

A. Wills
Multiple Subject Teacher

This lesson will allow students to demonstrate knowledge of length as compared to other objects.

## Length of Time: 15-20 Minutes

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### Common Core Alignment

CCSS.MATH.CONTENT.1.MD.A.1 - Order three objects by length; compare the lengths of two objects indirectly by using a third object.

## Objectives & Outcomes

Students will measure objects based on a set object (such as a pipe cleaner or ruler)

## Materials Needed

Random lengths of string (5 to 10 per student), pipe cleaners (or rulers)

## Procedure

### Opening to Lesson

• Explain to students that sometimes we do not have a ruler handy, but can still measure or compare lengths of items based on something standard.
• In this case the standard is a pipe cleaner.
• Give every student a pipe cleaner.

### Body of Lesson

• Give students ten different lengths of string.
• Tell them to use the pipe cleaner as a guide to see which ones are shorter or longer and then arrange each length on their desk from smallest to largest (shortest to longest).

### Closing

• Check student work.
• As a challenge activity have students join in groups of four and arrange all the lengths in order from longest to shortest.

## Assessment & Evaluation

The students will accurately arrange pieces of string by length using only a pipe cleaner as a comparison measure.

## Modification & Differentiation

Special needs students may be given extended time or fewer pieces for comparison.

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