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In this activity, learners explore how pneumatics and hydraulics could be used to produce movement in a robotic arm.

$10 - $20 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners interpret three trackways and use measurements and a formula to infer the relative speed of dinosaurs.

free Ages 11 - 14 45 to 60 minutes
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How does a green roof, or roof covered by plants, affect the temperature of the inside and outside of a building? Learners design and build houses to find out the answer.

$1 - $5 per group Ages 11 - 14 1 to 2 hours
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This lesson plan enables learners to explore the differences between weather and climate.

1 cent - $1 per group Ages 11 - 14 1 to 4 weeks
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In this math game (Page 14 of the Are You Game? PDF), learners determine the probability of getting an even versus an odd product using the numbers on a regular deck of cards.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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In this experiment using sprigs of Elodea, learners will observe a natural process that removes carbon dioxide (CO2) from Earth's atmosphere.

$10 - $20 per group Ages 11 - 14 1 to 2 hours
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In this activity, learners examine how colored lenses act like filters and absorb all colors of light except for the color of the lenses.

$5 - $10 per student Ages 8 - 14 10 to 30 minutes
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In this activity (located on pages 9-14 of PDF), learners visit a cemetery to examine the distinguishing characteristics of rock weathering.

free Ages 8 - 14 1 to 7 days
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In this activity, learners will keep track of how much they can do in one minute. Instructors can pick something everyone will do for a minute, such as jumping up and down or drawing stars.

free Ages 4 - 14 5 to 10 minutes
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Learners conduct two activities to investigate two properties of liquids: density and viscosity. In a clear container, learners stack 7 different liquids which will layer according to their density.

$5 - $10 per group Ages 11 - 14 30 to 45 minutes
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This activity introduces the idea of "divide and conquer" using a fictitious but serious problem--a pair of dirty socks has accidentally been wrapped in one of the presents that Santa is about to deli

free Ages 8 - 18 30 to 45 minutes
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In this activity, learners use information gathered from a variety of sources to design and make their own insect.

1 cent - $1 per student Ages 4 - 14 45 to 60 minutes
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This fun and simple hands-on astronomy activity lets learners build a scale model of the universe with little more than adding machine tape.

1 cent - $1 per student Ages 6 - adult 45 to 60 minutes
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In this activity, learners observe the water cycle in action! Water vapor in a tumbler condenses on chilled aluminum foil — producing the liquid form of water familiar to us as rain and dew.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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In this quick activity, learners use a toaster to investigate the source for the Earth's wind. Learners hold a pinwheel above a toaster to discover that rising heat causes wind.

free Ages 4 - 14 Under 5 minutes
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In this activity, learners collect worms and then observe how they move.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this space science activity, learners explore transits and the conditions when a transit may be seen.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners explore the different heating properties of soil and water.

$1 - $5 per group Ages 8 - 14 2 to 4 hours
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In this activity, learners will measure the length of a shadow and use the distance from the equator to calculate the circumference of the earth.

1 cent - $1 per group Ages 8 - 18 10 to 30 minutes
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Learners examine the manufacturing process while they make picture frames from cereal boxes.

1 cent - $1 per student Ages 11 - 14 45 to 60 minutes