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In this activity, learners engineer a paper helicopter that spins to the ground when dropped.

In this engineering activity (page 5 of PDF), young learners investigate how materials and design contribute to the strength of a structure, particularly walls.

In this hands-on activity, learners use an assortment of (mainly household) items to complete Rube Goldberg-type challenges.

In this activity learners will build roller coasters and test them using small balls or marbles.

In this activity, learners build bridges and cantilevers in a series of "building out" challenges with straws and pins.