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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, learners design a therapeutic agent to image and/or cure various diseases in the respiratory system.

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 will build a ball run contraption.

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