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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.

Conductivity: Salty Water
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Water, whether fresh or salty, serves as one of the best electrical conductors on the planet. Does salt effect its conductivity?

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.

Differing Densities: Fresh and Salt Water
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In this activity, learners visualize the differences in water density and relate this to the potential consequences of increased glacial melting.

Water Clean-up
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This is an activity (located on page 3 of the PDF under Water Clean-up Activity) about the use of reduction agents to decontaminate ground water.

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.

Pop Can "Hero Engine"
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In this activity, learners build water-propelled engines from soft drink cans.

Fragile Waters
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In this activity (on pages 18-29) learners explore the impact of the March 24, 1989 oil spill in Alaska caused by the Exxon Valdez tanker.

Global Climate Change and Sea Level Rise
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In this activity, learners practice the steps involved in a scientific investigation while learning why ice formations on land (not those on water) will cause a rise in sea level upon melting.

Ocean in a Bottle
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In this activity, learners consider how oil spills behave in the ocean and what impact they have on marine wildlife.

Positive Planning Adds Up
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In this drawing/mapping activity, learners design plots of land while incorporating positive strategies for improving water quality.

The Watershed Connection
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In this activity, learners interact with a 3-D model of a watershed to better understand the interconnectedness of terrestrial and aquatic environments.
Making An Impact!
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In this activity (on page 14 of PDF), learners use a pan full of flour and some rocks to create a moonscape.

Pipeline Challenge
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In this activity, learners explore how engineers develop pipeline systems to transport oil, water, gas, and other materials over very long distances.

Build a Battery
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Learners make a simple battery out of "sandwiches" of aluminum foil, pennies, and a salt water-soaked paper towel.

Recycling Paper
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In this crafty chemistry activity (on page 2 of the PDF), learners make their own paper from used paper they may have otherwise thrown away.

Wind Tunnel Testing
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In this activity, learners explore how wind tunnels provide feedback to engineers about the performance and durability of products such as planes, cars, and buildings.

Mountain Man Measurement Rendezvous
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In this math lesson, learners participate in several activities where they apply measurement skills.

Cook Up a Comet
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In this activity (on page 5 of PDF), learners use dry ice and household materials to make scientifically accurate models of comets.