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In this engineering activity, learners build a device (an anemometer) to measure how fast the wind is blowing.

In this activity, learners explore how acids can dissolve eggshells leaving behind a membrane-covered bouncy egg.

In this activity, learners explore the behavior of cold-blooded animals. Learners discover what happens when they change a fly's temperature.

In this engineering activity, learners explore simple machines and then build cardboard automata using cams.

In this activity, learners explore the invisible infrared radiation from an electric heater.

In this activity, learners will investigate static electricity as they create waterless snow globes.

This activity is about collecting and analyzing DNA as part of a criminal investigation.

“Exploring Earth: Investigating Clouds” is a hands-on activity in which visitors create a cloud in a bottle and explore it with laser light.

The "Rocket Reactions" activity is an exciting way to learn about how materials interact, behave, and change.

This activity was designed for blind learners, but all types of learners can explore the process used to cast and mold molten metal, glass, and plastics.

Working in small teams, learners try to build a satellite that can float for at least five seconds in the marked area of a vertical wind tube.

In this creative roleplay activity, learners will explore the various processes of the water cycle using movement, sound, and props to aid in comprehension.

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

In this combination chemistry and physics activity, learners explore water absorption in dried beans or peas and learn how this affects their physical properties.

In this activity, learners build a simple tabletop seesaw to test how different variables (the position of the fulcrum, distance, weight) affect its balance under increasing weight loads.

Learners place their hands on different metals and use an ammeter to monitor the flow of electricity from one metal to another.

In this activity, learners explore why they can see colors in bubbles and why they change.

In this activity (on pages 25-32 of PDF), learners make models of the inner ear out of pipe cleaners.

In this physics activity, challenge learners to make and race a balloon-powered car. Learners construct the body out of a paper cup, wheels out of wooden spools. and fuel tank out of a balloon.

In this activity, challenge learners to make a pencil stand on its tip using only two pieces of wire and two clothespins. Use this activity to demonstrate the center of gravity.