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

Go with the Flow
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Learners draw comic-style pictures to show the water cycle. From a starting picture, one learner draws what happens to the water in the next panel, then passes the comic strip to another learner.

Penny Drop
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In this quick activity about the properties of water (page 1 of PDF under SciGirls Activity: Malformed Frogs), learners will use an eyedropper to slowly place one drop of water at a time onto a penny,

Changing the Density of a Liquid: Heating and Cooling
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Learners investigate how the temperature of water affects its density.
Big and Little Cups
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In this indoor or outdoor water activity, learners pour water from small cups to large cups and containers. In doing so, they discover water takes the shape of its container.

The Incredible Journey
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In this weather activity (page 4 of the PDF), learners will explore the water cycle through an interactive game.

Electrostatic Water Attraction
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In this activity, learners conduct a simple experiment to see how electrically charged things like plastic attract electrically neutral things like water.

Who Dirtied The Water?
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In this activity, learners receive a labeled plastic film canister containing a material representing a pollutant (i.e. pencil shavings = a beaver's wood chips).

Heat Capacity: Can't Take the Heat?
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Why is ocean water sometimes the warmest when the average daily air temperature starts to drop? In this activity, learners explore the differing heat capacities of water and air using real data.

Water Underground
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Many people get water from a source deep underground, called groundwater.

What-a-cycle
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In this activity, learners act as water molecules and travel through parts of the water cycle to discover that it is more complex than just water moving from the ground to the atmosphere.

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?

Sunny Day Painting
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In this activity, learners explore properties of water and watch evaporation happen by "painting" with water in the sun.
What's So Special about Water: Absorption
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In this activity about water's cohesive and adhesive properties and why water molecules are attracted to each other, learners test if objects repel or absorb water.

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.

Water Walk
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Learners take a field trip along a local body of water and conduct a visual survey to discover information about local land use and water quality.

Stick to It: Adhesion II
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Water sticks to all kinds of things in nature — flowers, leaves, spider webs - and doesn't stick to others, such as a duck's back.
Pepper Scatter
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In this activity, learners explore the forces at work in water. Learners experiment to find out what happens to pepper in water when they touch it with bar soap and liquid detergent.

Straining Out the Dirt
Learners take on the role of environmental engineers as they design water filters.
How Does Water Climb a Tree?
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In this activity, learners conduct an experiment to explore how water flows up from a tree's roots to its leafy crown.