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In this activity, learners are challenged to design and construct a windmill to harness the power of wind.

In this activity, learners are challenged to design and build a system of gears and kinematics to create a hand-stamping machine.

In this activity, learners are challenged to design, build and test a birdhouse that will stay cool in the sun.

In this activity (page 1 of the PDF under SciGirls Activity: Forensics), learners will use a home video camera with a “night vision” mode to test how various inks appear outside the spectrum of visibl

In this activity, learners are challenged to design and build the tools they need to survive being shipwrecked on a deserted island.