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Straining Out the Dirt
Learners take on the role of environmental engineers as they design water filters.
Float My Boat
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In this activity, learners use tinfoil to build and test their own boats - which designs will float, and which will sink?
In the Toilet
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This activity explores the basic workings of a siphon, which is the core technology that makes toilets work.
Rescue Mission
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In this hands-on activity, learners use the steps of the design process to create a hook to rescue a "space capsule" from the water.
Draggin' Boats
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Learners design, build, and test models of "dragon boats" made from up to three milk cartons.
Indicating Electrolysis
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Electrolysis is the breakdown of water into hydrogen and oxygen. This Exploratorium activity allows learners to visualize the process with an acid-based indicator.
Can Nutrients in Water Cause Harm?
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In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients.
Pop Can "Hero Engine"
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In this activity, learners build water-propelled engines from soft drink cans.
Low-Tech Water Filter for High-Impact Clean
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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.
Water Treatment
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Water treatment on a large scale enables the supply of clean drinking water to communities.