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Pairs of learners play the roles of programmer and robot. The programmer gives specific directions to the robot to accomplish a simple task (e.g. walk across the room and pick up a pencil).

free Ages 8 - 11 10 to 30 minutes
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In this physics activity (page 6 of the PDF), learners will build a class 1 lever and hypothesize and test the distances two objects need to be placed from the fulcrum in order to balance.

1 cent - $1 per student Ages 14 - 18 10 to 30 minutes
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In this activity about states of matter, learners get to witness firsthand the awesome power of air pressure. They watch as an ordinary soda can is crushed by invisible forces.

free Ages 8 - 11 10 to 30 minutes
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This display shows the dangers of acid rain on buildings and other structures as two concrete bunny rabbits are disintegrated by sulfuric acid. Learners scrape chalk onto the concrete bunnies.

$5 - $10 per student Ages 11 - adult 10 to 30 minutes
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In this chemistry activity, learners transform two ingredients (4% polyvinyl alcohol solution and 4% borax solution) into gooey slime.

$5 - $10 per student Ages 6 - 18 10 to 30 minutes
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In this activity, young learners will describe objects by their properties and sort by color, weight and texture. This activity uses household items and toys for materials.

$1 - $5 per student Ages 4 - 8 10 to 30 minutes
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In this activity, learners simulate the behavior of the atmosphere.

free Ages 8 - 14 10 to 30 minutes
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In this activity, you'll use a paper cup, a piece of cloth, and some string to make a musical instrument called a cuica (pronounced KWEE-kah).

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners compare their own strength to ants through a series of physical tests.

free Ages 4 - adult 10 to 30 minutes
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In this activity about magnetism (page 13 of the pdf), learners will experiment with magnets to explore how water and other liquids affect the strength of magnetic fields.

$1 - $5 per group Ages 6 - 11 10 to 30 minutes
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In this optics activity, learners build a spy tool to secretly view things over walls or around corners.

$5 - $10 per student Ages 6 - 11 10 to 30 minutes
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In this math lesson, learners investigate fractions by playing a game.

free Ages 8 - 11 10 to 30 minutes
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In this activity, learners will explore the roles of different animals in the food chain. They will create their own food chain using organisms of their choice.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this engineering activity, learners construct sturdy geodesic structures out of gumdrops and toothpicks. Use this activity to explore engineering principles as well as sturdy shapes and triangles.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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During this activity, learners take part in a variety of tasks which involve moving and balancing different body parts.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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The goal of this activity is to design the fastest sailboat or one that carries the most treasure.

$5 - $10 per group Ages 6 - 18 10 to 30 minutes
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In this activity, Christina Elson, an archaeologist from the American Museum of Natural History, guides learners as they investigate an "artifact" and record their observations in a field journal.

free Ages 8 - 18 10 to 30 minutes
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In this online activity, learners role-play as medics, treating a patient with missing organs. Learners select different organs, then drag them into the proper location in the patient's body.

free Ages 8 - 11 10 to 30 minutes
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In this quick and easy activity, learners build an air cannon "drum" and see what happens when they "shoot" puffs of air at different targets.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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This experiment describes how to create a "dribble bottle" which only leaks water when the cap is unscrewed. The full water bottle has a small hole made with a push pin.

1 cent - $1 per student Ages 8 - 14 10 to 30 minutes