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Directed by instructional cards, learners kinesthetically model cell communication by acting as components in a cell signaling pathway.

1 cent - $1 per group Ages 11 - 18 30 to 45 minutes
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In this chemistry activity (on page 2 of the PDF), learners make a layered drink with liquids of different densities.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes
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In this four-part activity, learners explore how the body works and the chemistry that happens inside living things.

$5 - $10 per group Ages 8 - 14 45 to 60 minutes
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Learners discover that soap can be used to power a boat. Learners make a simple, flat boat model, put it in water, and then add a drop of detergent at the back of the boat.

$1 - $5 per student Ages 4 - 14 10 to 30 minutes
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In this activity, learners investigate visual perception as well as plan and conduct their own experiments.

1 cent - $1 per group Ages 8 - 18 1 to 2 hours
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In this experiment, learners try different liquids to see which ones clean pennies best. Liquids to try include water, lemon juice, cola, vinegar, and dishwashing detergent.

$1 - $5 per student Ages 6 - 14 10 to 30 minutes
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In this activity, learners construct three optical illusion toys to examine how our brains play tricks on what we see.

$1 - $5 per student Ages 6 - 18 30 to 45 minutes
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In this physics activity, learners build a toy with a figure that spins around like a gymnast on the high bar.

$5 - $10 per student Ages 8 - 18 1 to 2 hours
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What keeps bubbles and other things, like airplanes, floating or flying in the air?

1 cent - $1 per student Ages 4 - 14 10 to 30 minutes
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In this activity, learners explore electronics and motion by making a Scribbling Machine, a motorized contraption that moves in unusual ways and leaves a mark to trace its path.

$5 - $10 per group Ages 11 - adult 1 to 2 hours
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In this activity, learners build a stuffed-animal zip line. Learners hold a cord against a wall, hook a cute stuffed animal onto it, let the animal slide down, and records its travel time.

$5 - $10 per group Ages 8 - 11 30 to 45 minutes
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In this activity learners will explore the concepts of density and matter in their quest to answer one simple question-will it sink or will it float?

$1 - $5 per student Ages 4 - 11 5 to 10 minutes
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In this physics activity (page 12 of the PDF), learners explore potential and kinetic energy by rolling different sized marbles down an inclined plane.

$1 - $5 per group Ages 4 - 14 10 to 30 minutes
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In a class demonstration, learners observe a simple water cycle model to better understand its role in pollutant transport.

$5 - $10 per group Ages 8 - 14 30 to 45 minutes
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This is written as a static display, but can easily become a hands-on experiment for learners.

$5 - $10 per group Ages 14 - adult 30 to 45 minutes
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In this activity, learners will use a variety of household and/or natural objects to design a sculpture that balances from a single point.

free Ages 6 - adult 30 to 45 minutes
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This lesson focuses on how nanotechnology has impacted the design and engineering of many everyday items from paint to fabrics.

Over $20 per group Ages 8 - 18 1 to 2 hours
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Learners develop awareness and understanding of the daily air quality using the Air Quality Index (AQI) listed in the newspaper or online.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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This is an activity that demonstrates how batteries work using simple household materials. Learners use a pickle, aluminum foil and a pencil to create an electrical circuit that powers a buzzer.

$5 - $10 per group Ages 11 - 18 30 to 45 minutes
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This resource contains several mini-explorations using a slide projector as a light source to investigate light and the properties of images.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes