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In this activity, learners use tinfoil to build and test their own boats - which designs will float, and which will sink?

In this quick activity (page 1 of the PDF under SciGirls Activity: Tug O' War), learners will test how many pennies a flat paper index card bridging the gap between two stacks of books is able to supp

In this design challenge activity, learners build a rubber band-powered rover that can scramble across the room.

This activity is a hit for family events and all ages—some will finish in 45 minutes; others can go on for hours.