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In this activity, learners build a bird that flies in place with help from a motor, wire, and some straws.

In this activity, learners build unique yo-yos, which spin round and round without moving up and down.

Learners use shop tools and various materials to construct a magnetic spinner and a compass.

In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.

In this activity, learners discover that some things only stand up while they are spinning.

In this activity, learners construct a device that allows them to view 2-D images in 3-D.