Does it balance? An activity provides an opportunity to investigate the mathematics involved in making a balanced mobile. Using a stop-action video, the resource provides the formula needed to create a mobile that balances. The Math at the Core: Ratios video then shows what the result would be if the formula is not followed.

Concepts

balancing scale, mobiles, weight, distance, ratios, equivalent ratios, design

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Additional Tags

math

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Instructional Ideas

• Before watching the video, have the class discuss what variables affect whether the mobile is balanced
• Provide pupils with written problems asking for the distances that given weights must be from the center to balance

Classroom Considerations

• Individuals should understand the basics of ratios

Pros

• Includes time frames for the activity
• Contains a suggestion for an extension

Cons

• None

Common Core

5.OA.A.2 6.RP.A.1 6.RP.A.2 6.RP.A.3.a 6.RP.A.3.d