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This activity explores the basic workings of a siphon, which is the core technology that makes toilets work.

In an investigation called "Shape It!" learners craft tiny boats out of clay, set them afloat on water and then add weight loads to them, in order to explore: how objects stay afloat in water; what th

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

This activity (on page 2 of the PDF under SciGirls Activity: Water Slides) is a full inquiry investigation into speed and motion and takes place at a water park.

Electrolysis is the breakdown of water into hydrogen and oxygen. This Exploratorium activity allows learners to visualize the process with an acid-based indicator.

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

Water treatment on a large scale enables the supply of clean drinking water to communities.