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Handy Measuring Ratio
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In this activity, learners use their hands as tools for indirect measurement.

Stride Ruler
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In this activity, learners use their feet to estimate distances. Learners calculate the distance of one step in centimeters by measuring 10 steps at a time to reduce measurement error.

Angle Hunting
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In this activity, learners use a hand-made protractor to measure angles they find in playground equipment.

Playground Patterns of Cracks
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In this math activity, learners observe and sketch cracking patterns in pavement.

Build a Solar System
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In this activity, learners make a scale model of the Solar System and learn the real definition of "space." Learners use the online calculator to create an appropriate scale to use as a basis for thei