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

free Ages 4 - adult Under 5 minutes
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In this activity, learners make pykrete by freezing a mixture of water and a material like cotton wool, grass, hair, shredded paper, wood chips, or sawdust.

1 cent - $1 per student Ages 4 - adult 4 to 24 hours
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In this activity, learners build handheld rockets and launchers out of PVC pipes and plastic bottles. Use this activity to demonstrate acceleration, air pressure, and Newton's Laws of Motion.

Over $20 per student Ages 6 - 18 1 to 2 hours
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In this activity, young learners will experiment with a basic chemical reaction and observe what happens when gas gets trapped! Activity includes step-by-step instructions, safety notes and more.

$1 - $5 per student Ages 4 - 8 5 to 10 minutes
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In this activity, learners will investigate the part of soil. Explore how clay, silt, and sand make up the dirt in your background. Activity includes step-by-step instructions and extension ideas.

free Ages 4 - adult 10 to 30 minutes
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Everybody loves bubbles, and this is the best bubble recipe ever!

$5 - $10 per group Ages 4 - 11 30 to 45 minutes
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Explore the effects of gravity on a slowly falling object: a parachute you make out of plastic bags, string and stones.

1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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In this activity, learners make a parachute out of tissue paper, tape, and string. Then, learners test their parachute to see how many paper clips it can carry.

1 cent - $1 per student Ages 4 - 11 1 to 2 hours
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In this activity, learners investigate how different materials repel or absorb water. Learners use spray bottles to explore how everyday items like sponges, cardboard, feathers, etc.

$1 - $5 per group Ages 4 - 8 30 to 45 minutes
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In this activity, learners build rockets and shoot them into the air by stomping on the plastic bottle launchers.

$5 - $10 per student Ages 6 - 14 30 to 45 minutes
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In this activity, learners build a water squirter using a PVC pipe, dowel, and foam. This activity is great for the summer time and introduces learners to forces and water pressure.

$5 - $10 per student Ages 6 - 18 45 to 60 minutes
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In this activity, learners explore properties of water and watch evaporation happen by "painting" with water in the sun.

$5 - $10 per group Ages 4 - 8 10 to 30 minutes
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In this activity, learners investigate and compare the rate of drying in different conditions.

$1 - $5 per group Ages 6 - 11 30 to 45 minutes
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Make a kite out of a garbage bag, shower curtain, painting tarp--anything light, thin, flexible and plastic!

1 cent - $1 per student Ages 6 - 14 45 to 60 minutes
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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.

1 cent - $1 per group Ages 6 - 14 30 to 45 minutes
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In this activity on page 13 of the PDF, use a special plastic card that has been painted with a chemical that changes color when it is in UV light.

$5 - $10 per student Ages 6 - 14 10 to 30 minutes