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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 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 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.

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

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.