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In this activity, learners build water-propelled engines from soft drink cans.

Students design and build their own parachutes in this hands-on engineering project.

In this activity, learners of all ages will design a functional bird feeder using familiar, every day materials.

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 activity, learners consider how a simple machine, a lever, turns a small push or pull (a small force) into a larger--or stronger--push or pull (a larger force).

In this activity, learners are invited to imagine the park of their dreams!

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

In this activity, learners examine baking powder, a combination of three powders: baking soda, cream of tartar, and cornstarch.

In this project, students explore how levers work, by making a puppet with moving limbs.

What's a more compelling problem to solve than being stranded on a deserted island?

In this activity, learners explore how nanotechnology is being used to create new types of protective fabrics.

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

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

In this experiment, learners design and build a model room in a shoebox and furnish it with tiny furniture.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

In this activity, learners design a therapeutic agent to image and/or cure various diseases in the respiratory system.