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In this fun, hands-on autumn activity, learners experiment to discover whether the colored substances in leaves can be separated from the leaves.

$10 - $20 per group Ages 8 - 14 1 to 2 hours
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In this activity on page 3 of the PDF, learners visualize the relative size and structural differences between microbes that have the potential to cause disease.

$10 - $20 per group Ages 11 - 18 1 to 2 hours
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In this demonstration, learners watch as a device drops a ball into a cup without touching the ball or cup, even though the ball and cup are virtually side-by-side.

$10 - $20 per group Ages 11 - 18 5 to 10 minutes
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In this sports-themed engineering activity, learners create super bouncy balls out of balloons. Learners brainstorm, test their designs, and share results.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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In this laboratory activity, learners use a simple procedure to bait oomycetes from water and/ or soil and then examine these fungus-like organisms with the microscope to see how they look.

$1 - $5 per group Ages 11 - 18 1 to 7 days
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Learners use beach profile data from a local beach or online data from Ocean City, Maryland to investigate coastal erosion and sediment transport.

per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners build a 1:140 "scale model" of NASA's X-33 Reusable Launch Vehicle (RLV) Technology Demonstrator, and investigate how the model dimensions compare to the real vehicle.

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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In this engineering activity, learners build a device (an anemometer) to measure how fast the wind is blowing.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners simulate nature's water filtration system by devising a system that will filter out both visible and invisible pollutants from water.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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In this engineering activity, learners explore simple machines and then build cardboard automata using cams.

$5 - $10 per group Ages 8 - 14 2 to 4 hours
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This series of chemistry stations is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Each of the six stations features either a chemical or p

$10 - $20 per group Ages 11 - adult 45 to 60 minutes
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After learning that some of the chemicals we add to food crops may have harmful consequences on our health and the health of the environment, learners will create a pocket-sized card with their favori

1 cent - $1 per group Ages 6 - 14 30 to 45 minutes
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In this activity, learners can create five-layer density columns by employing one of three (or all) methods.

$5 - $10 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners explore how to stay fit the fun way. Learners participate in three physical activities.

free Ages 8 - 14 45 to 60 minutes
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In this robotics activity, learners find ways to express emotions and feelings using only body movements, not facial expressions.

free Ages 8 - 14 45 to 60 minutes
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In this outdoor activity and game, learners explore how animals adapt for survival through coloration, markings and camouflage.

$10 - $20 per group Ages 6 - 14 45 to 60 minutes
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This activity allows learners to explore the scientific method in an open-ended fashion, using the 4-P Approach to Science Inquiry developed by the University of Wisconsin, Beloit.

$5 - $10 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners explore the human influences on the carbon cycle and examine how fossil fuels release carbon.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this simulation, learners model two elephant seal populations and how they change over time. Learners start with cards representing a variety of seals.

free Ages 11 - 18 45 to 60 minutes
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In this group activity, learners use some common objects and work together to simulate the Coriolis effect. During the challenge, learners make predictions and test different scenarios.

$1 - $5 per group Ages 11 - 18 30 to 45 minutes