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In this design challenge activity, learners use a balloon and other simple materials to design an air-powered rocket that can hit a distant target.

This event guide features three related explorations in which learners investigate the following science concepts: how you design and build a structure helps determine how strong it will be; different

In this design challenge activity, learners build a rubber band-powered rover that can scramble across the room.

In this activity, challenge learners to design a roller coaster ride for a marble using cardboard and other simple materials.

In this optics activity, learners build a spy tool to secretly view things over walls or around corners.

In this activity, learners use a soda can to decode a secret message. Learners wrap scytale (pronounced ski-tally) code around a can and challenge friends to see if they can crack the codes.