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This activity lets you program your 'robot' (a willing friend) to pick up and dispose of some 'toxic waste' using as few commands as possible.

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 activity, learners use information gathered from a variety of sources to design and make their own insect.

In "Exploring the Solar System: Stomp Rockets," participants learn about how some rockets carry science tools—not scientists—into space, and how a special kind of rocket called "sounding rockets" can

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

Learners explore the Bernoulli effect by building an airfoil (airplane wing) and making it fly.

In this design challenge activity, learners build a tower that can support a tennis ball at least 18 inches off the ground while withstanding the wind from a fan.

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