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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.

Extra Bounce
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In this indoor or outdoor demonstration, use a large and small ball to illustrate conservation of energy and momentum.

Tube Zither
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In this activity, learners explore sound by constructing tube zithers, stringed instruments from Southeast Asia and the South Pacific.

Levers at Play
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In this activity, learners consider how a simple machine, a lever, turns a small push or pull (a small force) into a larger--or stronger--push or pull (a larger force).

Scent Tracking
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In this wintertime outdoor activity, learners role play wolves tracking their prey by following scented trails.

Learning the Land
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In this activity, learners will take a step back and learn the history of the land they live on, and the people who used to live on it.

Caller ID: The Frog - and Toad! - Mating Game
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This activity is a sensory experience that recreates the sounds of a pond at night.

Dueling Dice
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In this activity, learners explore probability with dice.

Trash Traits
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In this activity on page 24, learners perform experiments to examine whether or not trash can float, blow around, or wash away.

Toasty Wind
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In this quick activity, learners use a toaster to investigate the source for the Earth's wind. Learners hold a pinwheel above a toaster to discover that rising heat causes wind.

Corner Reflector
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In this optics/mathematics activity, learners use two hinged mirrors to create a kaleidoscope that shows multiple images of an object.

Rocking Changes
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In this earth science activity, learners conduct a series of short experiments to explore how rocks change.

Family Flyers
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In this activity, learners work in teams to build and test paper airplanes. Learners try to fly their airplanes directly on the runway and earn points for accuracy.

Floating Head Cup
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In this activity, learners watch a figure "magically" float up through the air.

Fossil Rocks
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In this activity, learners will discover how fossils are dug out of the earth by carefully exposing treasures hidden in an artificial rock that is easily made at home.

Eclipse: How can the little Moon hide the giant Sun?
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In this activity, learners explore how distance can affect the way we perceive the size of an object.
Math and Creativity Posters
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These math posters have questions written on them, such as: How many colors can you name in a minute? or How many seconds can you balance on one foot?

Water: A Basic Ingredient
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In this activity, learners explore healthy choices related to the liquids they drink. The importance of water and milk as essential nutrients for a healthy body is the focus of the experience.

Make a Cast of a Tyrannosaurus rex Fossil
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In this activity, learners explore dinosaur fossils by making cast models of a T. rex. First, learners read about and research how dinosaur fossils form.

Stained Glass Glue
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In this activity on page 6 of the PDF, learners use glue instead of glass to create artwork that can be hung in a window.