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In this activity (posted on March 14, 2011), learners follow the steps to construct a camera projector to explore lenses and refraction.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners make their own heat waves in an aquarium.

$5 - $10 per group Ages 8 - 18 10 to 30 minutes
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In this activity, learners make an electromagnet motor to demonstrate the most basic method of changing electrical energy into mechanical energy.

$5 - $10 per group Ages 14 - 18 45 to 60 minutes
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In this activity, learners conduct a series of hands-on experiments that demonstrate how the working of plants' veins, known as capillary action, enables water to travel throughout the length of a pla

$5 - $10 per student Ages 11 - 14 1 to 7 days
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In this activity, learners discover the difficulty of ocean exploration by human beings as they investigate water pressure.

$5 - $10 per group Ages 8 - 11 10 to 30 minutes
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In this activity, learners model erosion using a clear shoebox and sand or soil.

$5 - $10 per group Ages 8 - 11 1 to 2 hours
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In this activity, learners are challenged to design a planktonic organism that will neither float like a cork nor sink like a stone.

$5 - $10 per group Ages 8 - adult 30 to 45 minutes
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In this health activity (page 5 of the PDF), learners will explore a unique connection betweeen the bones of the body.

$5 - $10 per group Ages 8 - 14 45 to 60 minutes
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This activity (on page 3 of the PDF under GPS: Animal Scent Activity) is a full inquiry investigation into animal behavior.

$5 - $10 per student Ages 8 - 14 1 to 2 hours
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In this activity, learners build simple alarms that they can attach to anything, such as a drawer or doorway. This activity introduces learners to electricity, circuits, and currents.

$5 - $10 per student Ages 6 - 11 45 to 60 minutes
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In this activity, learners build a bird that flies in place with help from a motor, wire, and some straws.

$5 - $10 per student Ages 6 - 14 30 to 45 minutes
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The Ancient Egyptians used a naturally-occurring salt from the banks of the Nile River, called natron, to mummify their dead.

$5 - $10 per group Ages 8 - 18 1 to 4 weeks
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In this sunny day experiment, learners measure and compare how quickly light and dark colored materials absorb heat.

$5 - $10 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners explore sound by constructing their very own instruments using PVC pipes, soda bottles, and a straw.

$5 - $10 per student Ages 6 - 11 45 to 60 minutes
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In this activity about human anatomy (page 20 of PDF), learners investigate the structure of muscles by comparing yarn and cooked meat.

$5 - $10 per group Ages 6 - 11 45 to 60 minutes
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In this food science activity, learners conduct an experiment that demonstrates the importance of light to plants.

$5 - $10 per group Ages 8 - 14 1 to 4 weeks
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This activity (on page 3 of the PDF under GPS: Body Electricity Activity) is a full inquiry investigation into conductivity.

$5 - $10 per student Ages 8 - 14 1 to 2 hours
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In this activity (located on page 10 of the PDF), learners explore the properties of spraying and dripping water, while making art.

$5 - $10 per group Ages 4 - 8 10 to 30 minutes
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In this design challenge activity, learners invent a device that will make their friends and family ask, "What's buzzing?" Learners design an alarm with an on/off switch that is small enough to hide.

$5 - $10 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners prepare four polymer elastomers and then compare their physical properties, such as texture, color, size, and bounce height.

$5 - $10 per group Ages 4 - 14 1 to 2 hours