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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.

In this online Flash game, learners test their engineering know-how, moving a collection of mechanical parts onto a board to make complete a system of parts that will move a ball from start to finish.

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

This activity explores the main algorithms that are used as the basis for searching on computers, using different variations on the game of battleships.