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In this activity, learners turn empty 2-liter bottles into a see-through compost container.

In this activity, learners build a sled kite that models a type of airfoil called a parawing.

In this activity, learners work in pairs to measure each other's ankles with lengths of string.

In this design challenge activity, learners build a shock-absorbing system that will protect two “astronauts” when they land.

In this chemistry demonstration, acid rain is simulated in a petri dish.

This three-part activity shows learners how to build three meteorology tools: a wind vane, a rain gauge, and a barometer.