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In this activity (on page 146 of the PDF), learners will explore the effects of increased carbon dioxide in the bloodstream.

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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In this physical sciences activity, learners explore how passive solar design increases energy efficiency.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this small-group activity, learners assume the roles of pilots, air traffic controllers, and NASA scientists to solve five Air Traffic Control (ATC) problems.

$5 - $10 per group Ages 8 - 18 1 to 7 days
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In this water pollution activity, learners create pond water cultures and investigate the effects of adding chemicals or natural nutrients.

$5 - $10 per group Ages 8 - 14 1 to 7 days
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Learners use engineering design principles to construct and test a fully solar-powered car. Solar car kits usually include a photovoltaic cell and motor; some include a chassis as well.

Over $20 per student Ages 11 - 14 2 to 4 hours
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In this activity, learners work in teams to construct human lung models from small plastic beverage bottles and balloons.

1 cent - $1 per student Ages 8 - 14 30 to 45 minutes
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This lesson focuses on surface area and how the shape of sugar crystals may differ as they are grown from sugars of different coarseness.

$1 - $5 per group Ages 8 - 14 1 to 7 days
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In this activity about electricity, learners imagine that they are out in the wilderness and it is getting dark. Their task is to use the materials supplied to build a simple flashlight.

$5 - $10 per group Ages 8 - 11 30 to 45 minutes
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In this activity, learners act as epidemiologists by mapping the prevalence of HIV/AIDS worldwide.

$1 - $5 per group Ages 8 - 18 1 to 2 hours
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This lesson focuses on how to measure at the nanoscale and provides learners with an understanding how small a nanometer really is.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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In this biology/ecology activity, learners construct a terrarium out of a tennis ball container. This terrarium is unique because it never has to be watered.

$1 - $5 per student Ages 6 - 11 1 to 4 weeks
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In this activity, learners will determine if the frequency and intensity of hurricanes are changing using real data from the National Hurricane Center.

free Ages 14 - 18 1 to 2 hours
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In this environmental health activity, learners investigate their own vital lung capacities.

$1 - $5 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners dissect a piece of pizza to learn about nutrients important for health.

$5 - $10 per group Ages 11 - 14 45 to 60 minutes
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In this math lesson, learners identify the relationship between the number of sides in a regular polygon and the number of struts needed to make each polygon rigid.

$1 - $5 per group Ages 8 - 11 45 to 60 minutes
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In this math lesson, learners participate in a variety of activities that give them experience in recognizing, describing, and extending repeating and arithmetic patterns.

$5 - $10 per group Ages 6 - 8 1 to 2 hours
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In this activity (page 105 of the PDF), learners measure heart rate and blood pressure and learn how to obtain consistent measurements during repeated tests.

1 cent - $1 per group Ages 8 - 18 10 to 30 minutes
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In this activity, learners mix ingredients in a plastic bag, and then identify three characteristics of a chemical reaction: production of heat, color change, and production of a gas.

$5 - $10 per group Ages 11 - 18 10 to 30 minutes
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In this activity (page 37 of the PDF), learners observe, on a prepared slide, muscle and spinal cord cells from a rat.

$10 - $20 per group Ages 8 - 18 45 to 60 minutes
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In this three-part activity, learners play a game and conduct two simple experiments to explore water and surface tension. Learners will have fun discovering how water "sticks" together.

$1 - $5 per student Ages 8 - 11 10 to 30 minutes