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Students design and build their own parachutes in this hands-on engineering project.

In this design challenge activity, learners build a machine out of cardboard that runs smoothly and dependably. Learners must be precise to make sure their component works properly.

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

This design challenge is an open-ended exploration of linkages, a group of parts connected by hinges, and the types of motion they can create.