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In this activity, learners simulate nature's water filtration system by devising a system that will filter out both visible and invisible pollutants from water.

In this activity, learners use the design thinking process to design and build their own aqueduct, or water bridge.

Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water.

Learners observe and compare the sizes of three toy “growing” crocodiles made from water-absorbent polymers. One is it its original state, dry, hard, and about 10cm long.

Learners mix liquid water with solid cornstarch. They investigate the slime produced, which has properties of both a solid and a liquid.

Learners observe a sealed test tube containing a small amount of solid stearic acid.

In this physics activity, learners build their own rockets out of film canisters and construction paper.

This is an activity that demonstrates how batteries work using simple household materials. Learners use a pickle, aluminum foil and a pencil to create an electrical circuit that powers a buzzer.