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Home Water Audit
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This activity offers learners and their families several ways to raise their awareness together about home water.

The World's Water
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Water on Earth is in lakes, the ocean, rivers, underground, and frozen glaciers.

Water Drop Races
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In this activity, learners will explore the physics of liquids and gas by playing with both! Learners of any age use their own breath to move drops of water across a smooth wax paper surface.

Water Engineering
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In this activity, learners will engineer a water irrigation system. Learners will create a ditch irrigation system -- or an acequia-- to move water with the help of gravity.

What's in the Water
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"What's in the Water" lets participants use tools to solve the mystery- what chemicals and compounds are in a sample of water?

The Scoop on Habitat
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Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

Exploring Size: Ball Sorter
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In this activity, learners use sieves with different-sized holes to sort balls by size.

Solar Convection
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In this activity, learners add food coloring to hot and cold water in order to see how fluids at different temperatures move around in convection currents.

Water Bugs
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Some bugs can walk on the surface of a lake, stream, river, pond or ocean.

Exploring Forces: Gravity
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In this nanoscience activity, learners discover that it's easy to pour water out of a regular-sized cup, but not out of a miniature cup.

Ice Fishing
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In this activity, learners will use string and salt to lift an ice cube out of a glass of water. Salt depresses the freezing point of water, allowing it to melt around the string and refreeze.

Build A Bee Bath
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In this activity, learners use found natural materials to create a water haven for bees and other insects.

Tie Dye Secret Messages
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In this activity, learners will write a secret message that only their friends will be able to read.

Fireworks in a Glass
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In this activity, learners use water, oil, and food coloring to observe a chemical reaction that creates a shower of colors inside of a glass.
Finding the Right Crater
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This quick demonstration (on page 11 of PDF) allows learners to understand why scientists think water ice could remain frozen in always-dark craters at the poles of the Moon.

Pneumatic Trough
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In this activity, learners build a "pneumatic trough," a laboratory apparatus used for collecting pure gas samples over water.

Condiment Diver
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In this hands-on activity, learners make the world's simplest Cartesian diver, using only a plastic bottle, some water, and a condiment packet.

Exploring Materials: Hydrogel
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In this activity, learners discover how a super-absorbing material can be used to move a straw.

Mystery Sand
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In this activity, learners play with surprising sand that doesn’t get wet! Learners explore how water behaves differently when it comes in contact with "magic sand" and regular sand.

Cartesian Diver
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In this demonstration, learners observe the effects of density and pressure. A "diver" constructed out of a piece of straw and Blu-Tack will bob inside a bottle filled with water.