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Learners design and create musical instruments from common objects; their challenge is to create an instrument that can make three different tones.

In this engineering activity, learners design and build a mechanical arm to lift a small item.

In this ocean engineering activity, learners explore buoyancy and water displacement. Then, learners design models of deep sea divers that are neutrally buoyant.

In this design challenge activity, learners modify a cup so it can carry a marble down a zip line and also drop it onto a target.

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

In this activity, learners mix milk, vinegar, baking soda, and water to create sticky glue. Use this activity to explain how engineers develop and evaluate new materials and products.

Learners tour their school or home looking for sources of indoor air pollutants (IAPs).

Learners build devices from rubber bands to test for invisible air pollutants.

In this great hands-on activity, learners use patterns to make a teepee from newspaper that they sit inside.

In this robotics activity, learners find ways to express emotions and feelings using only body movements, not facial expressions.

In this activity, learners explore the concept of friction and how ball bearings reduce friction.

In this activity, learners build a mini dancing robot. This engineering activity introduces learners to electricity, circuits, switches, conductivity, and motors.

In this fun hands-on activity learners explore a simple machine: the lever. What happens to a load when you multiply the length of a lever? Find out here!

In this activity, learners incorporate a simple switch into a battery/bulb circuit. Learners will use their knowledge of circuits to design and make their own switches using common materials.

In this activity, learners build their own sound machines and explore the interplay of motion and sound.

In this activity, learners build a kite out of paper, change it, and try to make it fly even better. With their new knowledge of kite making, students can then go on to create their own kite designs.

In this activity, learners model directed evolution by making paper fly. Learners construct and fly paper airplanes.