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In this hands-on engineering project, kids use two simple machines, levers and inclined planes, to construct their own pinball machines.

In this engineering activity, learners design their own board games.

In this game (on pages 14-21), learners explore how each human being inherits genetic traits such as eye color.

Learners create an electrical-circuit maze out of wire, then try to pass a paperclip through the maze without touching the wire.