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In this design challenge activity, learners build a four-stringed instrument that can play a tune.

$1 - $5 per student Ages 8 - 14 45 to 60 minutes
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In this activity, learners calculate their water usage (in cups and galloons) during an average shower. Learners also chart and analyze water usage during showers in their households.

free Ages 6 - 11 45 to 60 minutes
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This activity (on pages 7-13) has pairs of learners survey an array of similarities and differences between them.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes