Ever wonder how many marshmallows long your toothbrush is? Well, you're in luck! This hands-on measurement activity requires young mathematicians to determine the length of their toothbrush using Unifix® cubes, buttons, Cheerios, bear counters, raisins, and yes, marshmallows. This fun activity would make a great addition to a primary grade math unit on measurement.

Concepts

length, measurement

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Additional Tags

length, measurement, nonstandard unit, math

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Instructional Ideas

• Create six stations around the classroom, one for each object, and allow students to rotate around to measure their toothbrushes
• Following the activity, discuss the class' experiences with using the different objects to make measurements

Classroom Considerations

• Activity requires that either students bring in their own toothbrushes or that the teacher provides the class with toothbrushes

Pros

• A picture of each measurement unit is included to support students with completing the activity

Cons

• None

Common Core

1.MD.A.2 MP5