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Learners investigate how the temperature of water affects its density.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this activity (p.14-15 of PDF), learners discover the concepts of competition and limiting factors as they relate to plant and animal communities.

$1 - $5 per student Ages 4 - 11 10 to 30 minutes
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In this activity, learners build water-propelled engines from soft drink cans.

$1 - $5 per group Ages 4 - 14 30 to 45 minutes
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In this engineering activity (page 2 of PDF), young learners investigate how a wide base can make a building more stable. Learners use blocks or boxes of different sizes to construct stable towers.

$1 - $5 per group Ages 4 - 8 30 to 45 minutes
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In this activity, learners participate in several full-body interactive games to model the process of self-assembly in nature and nanotechnology.

$1 - $5 per student Ages 4 - adult 10 to 30 minutes
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In this activity, learners construct three math puzzles out of simple materials like wood, string, and Styrofoam.

$1 - $5 per student Ages 6 - 14 1 to 2 hours
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In this design challenge, learners will create their own roller coaster using household objects for the track and a marble or small ball as their cart.

$1 - $5 per group Ages 6 - 14 30 to 45 minutes
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In this activity, one person acts as a human robot while another acts as their developer by programming their actions.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners make their own pinhole viewer in order to measure the size of the sun.

$1 - $5 per group Ages 8 - adult 10 to 30 minutes
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Did you know that using a lens one can bend light to make pictures of the world? It's true!

$1 - $5 per student Ages 4 - 11 10 to 30 minutes
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In this activity, learners use sand and ice cubes to create a model of permafrost and the effects of the ice melting through the surface.

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this activity on page 2 of the PDF, learners test different materials to find out which is the best insulator.

$1 - $5 per student Ages 6 - 14 1 to 2 hours
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In this physics activity (page 3 of the PDF), learners will move a load using a lever of each of the 3 classes. They will explore the differences between these classes and which are more effective.

$1 - $5 per group Ages 14 - 18 10 to 30 minutes
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In this chemistry activity, learners use common chemicals to examine reactions that occur between two aqueous solutions.

$1 - $5 per student Ages 11 - 18 5 to 10 minutes
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In this math lesson, learners determine and compare the rate of descent of various learner-constructed parachutes. Learners construct parachutes that will have maximum hang times.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes
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In this activity, learners explore healthy choices related to the foods they eat. The importance of a variety of fruits and vegetables to a healthy diet is the focus of the experience.

$1 - $5 per group Ages 4 - 8 45 to 60 minutes
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Some bugs can walk on the surface of a lake, stream, river, pond or ocean.

$1 - $5 per group Ages 8 - adult 5 to 10 minutes
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In this activity, learners use candy pieces and a cookie to make an accurate model of the Sun they can eat. Parts of the delicious model include solar granules, sunspots, and solar prominences.

$1 - $5 per student Ages 6 - adult 10 to 30 minutes
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In this activity, learners create and reveal secret messages written with invisible ink! The invisible ink is actually a baking soda solution, and the magical revealing liquid is fruit juice.

$1 - $5 per group Ages 6 - 11 45 to 60 minutes
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In this activity (page 5 of pdf), learners explore the relationships between the shape and structure of a shark's teeth and the food it eats, and then create their own shark tooth from clay.

$1 - $5 per student Ages 6 - 11 1 to 2 hours