Mathematics activities

How Long?

by

Patricia Weaver, Drachman Elementary School, Tucson, AZ

You'l need

• small objects to use as non-standard units of measure, or the ruler you made in an earlier activity.
• objects to measure
• a pencil
• a How long? data sheet

Directions

1. Choose a non-standard unit of measure to use.

1. Find something in the room to measure. Record its name.
2. Estimate how long you think it is, in the units you chose. Record your estimate.
3. Measure how long it is. Record the length.
4. Estimate and measure the length of seven more things in the room.

Example

Name of object	Estimated Length	Measured Length
Book	9 paper clips	8 paper clips
Pencil	6 paper clips	5 paper clips
...	...	...

 

Data sheet

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