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In this activity, learners create a "Jam Jar Jet" based on Francois Reynst's discovery of a pulsejet engine, which uses one opening for both air intake and exhaust.

In this physics activity, challenge learners to make and race a balloon-powered car. Learners construct the body out of a paper cup, wheels out of wooden spools. and fuel tank out of a balloon.

In this activity, learners explore rocketry and the principals of space flight.

In this activity, learners construct and launch rockets using simple materials and their understanding of chemical reactions.

Using simple, inexpensive items, learners build and test submarine models.