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In this activity, learners will create an optical illusion top. Learners will explore color mixing, physics and design through this activity.

Make your own "Dance Dance Revolution" dance pad! In this design challenge activity, learners work in teams to build a dance pad that lets you use your feet to sound a buzzer or flash a light.

In this activity, challenge learners to design a roller coaster ride for a marble using cardboard and other simple materials.

In this math activity, learners make their own bubble wands and determine if the size of the wand affects the number of bubbles it produces.

In this activity, learners explore trebuchet design. Teams of learners construct trebuchets from everyday materials.

In this activity, learners build a seesaw powered by magnets.

In this activity, learners use oil, water, food coloring and antacid tablets to create a bubbling lava lamp. Use this activity to introduce concepts related to density, hydrophobicity vs.

In this activity, learners build mini catapults using paint paddles and a spoon. Use this activity to introduce learners to forces and projectile motion.

In this activity, learners explore moving air and the physics of lift and drag by constructing homemade wind tunnels.

In this activity, learners will use a compact disc to build an air puck that can glide across a smooth tabletop. The puck glides with almost no friction on a cushion of air escaping from a balloon.

In this activity, learners explore the concept of how brakes can stop or slow mechanical motion.

This activity (on page 2 of the PDF under SciGirls Activity: Luge) is a full inquiry-based challenge related to motion and design optimization.

In this activity, learners explore sports engineering and advanced materials development.

In this activity, learners construct a device that allows them to look over ledges or around corners.

In this activity, learners explore the design of rubber band powered cars. Learners work in teams of "engineers" to design and build their own rubber band cars out of everyday items.

This fun video explains how to make a batch of oobleck (or slime) and why this special substance is known as a "non-Newtonian" fluid. Watch as Mr.

In this activity, learners will build thier own balance scale. Learners will explore weight and comparison through this activity.

In this activity (located on page 3 of the PDF), learners investigate the way water moves and how we can control and direct water.

Learners follow the template to build and fly a paper helicopter.

In this game, learners take turns guessing toy animals from around their house based on the toy's characteristics.