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Scientists use enormous wind tunnels to test the design of planes, helicopters, even the Space Shuttle.

Learners discover the bubble power of living cells in this multi-hour experiment with baker's yeast. Learners make a living yeast/water solution in a bottle, and add table sugar to feed the yeast.

Most people will break a bone in their body at some point in their life, but how much force does it take to break one?

Some animals can swallow food whole, but humans have to chew. In this activity, learners will investigate what saliva does chemically to food before we even swallow.

In this outdoor activity, learners use only their senses to to find the extremes of several environmental variables or physical factors: wind, temperature, light, slope and moisture.

In this activity, learners make their own Sun tracker to explore how ancient civilizations around the world studied the Sun.