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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.

$10 - $20 per group Ages 8 - 14 2 to 4 hours
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In this activity, learners discuss the different salinities of oceans, rivers and estuaries.

$5 - $10 per group Ages 8 - adult 1 to 7 days
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In this activity, learners discover the difficulty of ocean exploration by human beings as they investigate water pressure.

$5 - $10 per group Ages 8 - 11 10 to 30 minutes
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What causes frost to form on the outside of a cold container? In this activity, learners discover that liquid water can change states and freeze to become ice.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners use open inquiry to learn about the process of science as well as gain experience regarding the Law of Conservation of Mass, dissolution, and density.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners observe the effect of transpiration as water is moved from the ground to the atmosphere.

1 cent - $1 per group Ages 6 - 14 2 to 4 hours
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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.

$5 - $10 per group Ages 6 - adult 10 to 30 minutes
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In this design challenge activity, learners build a boat that can hold 25 pennies (or 15 one inch metal washers) for at least ten seconds before sinking.

$1 - $5 per student Ages 8 - 14 30 to 45 minutes
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In this activity, learners investigate convection by using food coloring and water of different temperatures.

1 cent - $1 per group Ages 11 - 18 45 to 60 minutes
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In this simulation activity, learners observe what can happen when ocean waves churn up water and oil from an oil spill.

1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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Learners build models to learn about the special cells and structures that plants use to move water from their roots up through the stems and leaves.

$5 - $10 per group Ages 8 - 11 1 to 7 days
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In this activity, learners explore the concept of density-driven currents (thermohaline circulation) and how these currents are affected by climate change.

$10 - $20 per group Ages 8 - adult 1 to 2 hours
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In this activity, learners create a freshwater ecosystem in a large plastic bottle. Learners cut and prepare bottles, then fill with water, aquatic plants, snails and fish.

$10 - $20 per group Ages 8 - 18 1 to 7 days
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This is a quick activity (located on page 2 of the PDF under Nasturtium Leaves Activity) about surface tension.

free Ages 8 - 14 10 to 30 minutes
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In this activity (located on page 10 of the PDF), learners explore the properties of spraying and dripping water, while making art.

$5 - $10 per group Ages 4 - 8 10 to 30 minutes
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By building a simple watershed with paper and markers and then using a spray bottle to simulate precipitation, learners will understand how pollution accumulates in our water sources, especially from

1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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In some parts of the world, lakes freeze during winter. In this activity learners will explore water’s unique properties of freezing and melting, and how these relate to density and temperature.

$5 - $10 per group Ages 8 - adult 10 to 30 minutes
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In this activity, learners investigate the different salinity levels of oceans, rivers and estuaries.

Over $20 per group Ages 8 - adult 1 to 7 days
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In this activity, learners explore how salt water freezes in comparison to fresh water.

1 cent - $1 per group Ages 6 - 14 1 to 2 hours
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In this investigation learners explore the differences between, and interdependence of, living and nonliving elements in a water ecosystem.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes