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In this quick and simple activity, learners explore how the distribution of the mass of an object determines the position of its center of gravity, its angular momentum, and your ability to balance it

1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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In this activity, learners touch and observe skulls of sharks and rays to learn about their diversity (over 400 species of sharks alone!).

Over $20 per group Ages 4 - adult 5 to 10 minutes
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In this activity, learners see how many coins they can add to a full glass of water before the water overflows.

1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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In this activity, learners explore the relative size of the Sun and Earth as well as the distance between them.

1 cent - $1 per group Ages 6 - 18 5 to 10 minutes
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This activity teaches combustion as the interaction of a fuel source and oxygen.

$1 - $5 per student Ages 4 - 8 5 to 10 minutes
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This is an online exhibit about color perception. Learners set a random background color and then try to mix red, blue, and green light to match.

free Ages 6 - 18 5 to 10 minutes
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In this activity, learners create a toy that demonstrates the First Law of Thermodynamics or the Law of Conservation of Energy.

1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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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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In this activity about electricity and magnetism, learners examine what happens when a magnet exerts a force on a current-carrying wire.

$1 - $5 per student Ages 8 - 14 5 to 10 minutes
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In this activity, learners keep track of how much paper the group uses in a week. Build awareness of paper waste, while strengthening measurement and estimation skills.

free Ages 4 - 14 5 to 10 minutes
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This activity is designed to accompany the PBS documentary about African-American chemist "Percy Julian: Forgotten Genius." Learners look through two cups with small holes in them to simulate what it'

1 cent - $1 per group Ages 6 - adult 5 to 10 minutes
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Combine la lógica y los números en este juego para todas las edades.

free Ages 4 - 14 5 to 10 minutes
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In this activity, learners will make cleaning up more fun with predictions and counting. Estimate how many things are on the floor (or table), then count as they are picked up.

free Ages 4 - 11 5 to 10 minutes
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In this demonstration, learners attempt to get a large coin through a small hole, the size of a smaller coin.

1 cent - $1 per student Ages 8 - adult 5 to 10 minutes
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In this demonstration, learners can observe a number of small convection cells generated from a mixture of aluminum powder and silicon oil on a hot plate.

$5 - $10 per student Ages 8 - 14 5 to 10 minutes
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In this activity, learners use a laser pointer, empty soda bottle, rubber plug and water to demonstrate total internal reflection.

free Ages 14 - 18 5 to 10 minutes
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In this activity, learners explore how distance can affect the way we perceive the size of an object.

free Ages 4 - 18 5 to 10 minutes
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In this chemistry activity, learners use common chemicals and metals to examine reactions that produce gaseous substances.

$1 - $5 per student Ages 11 - 18 5 to 10 minutes
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In this activity, learners explore in what ways the shape of the land and the pull of gravity influence how water moves over Earth.

1 cent - $1 per student Ages 4 - 11 5 to 10 minutes
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In this physics activity (page 6 of the PDF), learners will try to keep a marble in a bottomless cup without touching the marble inside.

$1 - $5 per student Ages 11 - 14 5 to 10 minutes