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In this investigation, learners explore the force known as buoyancy by placing various objects into water and observing how they behave (for example, which sink more quickly, which float, how much wat

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners build a sled kite that models a type of airfoil called a parawing.

$1 - $5 per student Ages 6 - 11 1 to 2 hours
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In this design challenge activity, learners build a shock-absorbing system that will protect two “astronauts” when they land.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this activity, learners work in pairs to measure each other's ankles with lengths of string.

$1 - $5 per group Ages 8 - 14 5 to 10 minutes
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In this chemistry demonstration, acid rain is simulated in a petri dish.

$1 - $5 per group Ages 14 - adult 5 to 10 minutes
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This three-part activity shows learners how to build three meteorology tools: a wind vane, a rain gauge, and a barometer.

$1 - $5 per student Ages 8 - 14 1 to 7 days