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In this demonstration, learners investigate mass, gravity, and acceleration by dropping a wooden bar with a balloon attached to its underside, a mass suspended from it by rubber bands, and a sharp-poi

In this activity related to flight, learners conduct two simple tests to explore how lift works.

In this activity related to flight, learners build a tiny stream channel to investigate how fluids (air and water) change speed as they flow between and around objects.

This is an activity (located on page 131 of the PDF) related to sleep and circadian rhythms as well as space travel.