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This activity was designed for blind learners, but all types of learners can use it to build and examine a basic electrical circuit.

In this activity/demo about piezoelectricity, learners discover how some crystals produce electricity when squeezed.

In this activity about light and perception, learners create pictures in thin air.

In this optics activity, learners examine how a transparent material such as glass or water can actually reflect light better than any mirror.

This activity models the necessary balance of creating power and cleaning up its associated waste. Learners participate in a game where they attempt to move forward toward a goal.

In this electrochemistry activity, young learners and adult helpers create a battery from a potato to run a clock.

Build and test a scale model of a rainforest canopy walkway.

Scientists use enormous wind tunnels to test the design of planes, helicopters, even the Space Shuttle.

Learners create an Incan counting device called a quipu (pronounced kee-poo).

In this activity, learners will work together to create a program to navigate a Remotely Operated Vehicle (ROV) through an obstacle course.

In this activity, learners consider the water features they might enjoy at a community park--a pond, brook, water playground (or "sprayground"), or pool--and what happens to the water over time.

In this outdoor activity, learners explore UV rays from the Sun and ways to protect against these potentially harmful rays.

In this activity, learners will make their own "ball bearing" with two jar lids, marbles, and some household supplies.