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In this engineering activity, learners explore simple machines and then build cardboard automata using cams.

In this activity, learners create a colorful bookmark using a super thin layer of nail polish on water. Learners discover that a thin film creates iridescent, rainbow colors.

This simple construction activity teaches the importance of architectural structure. Learners build and test designs for a paper "doghouse" strong enough to hold the weight of a jumbo dog biscuit.

In this activity (page 4), learners work in groups to plan and build large structures using recyclable materials they have brought from home.