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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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Make a copy of the first stethoscope with only a cardboard tube! René Laennec invented the first stethoscope in 1819 using an actual paper tube!

free Ages 4 - 14 5 to 10 minutes