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In this activity, learners will discover how to make butter from scratch. One optional tips includes adding marbles to speed up the process.

$1 - $5 per group Ages 4 - 18 30 to 45 minutes
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The goal of this activity is to design, build and test a house or toy for an animal.

$1 - $5 per group Ages 4 - 18 30 to 45 minutes
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Learners compare the properties of two balls that appear identical. One ball bounces, while the other ball "thuds." The “bounce” ball is made of the polymer polybutadiene (-C4H4-).

Over $20 per group Ages 6 - adult Under 5 minutes
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In this activity, learners discover if carbon dioxide has an effect on temperature.

1 cent - $1 per group Ages 6 - 14 1 to 2 hours
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Make a kite out of a garbage bag, shower curtain, painting tarp--anything light, thin, flexible and plastic!

1 cent - $1 per student Ages 6 - 14 45 to 60 minutes
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In this activity, learners make instant ice cream without using a freezer.

$5 - $10 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners surprisingly pop balloons without touching them using orange peels. This Mr.

$1 - $5 per student Ages 6 - 14 5 to 10 minutes
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In this activity, learners will discover what colors are in different markers, and may be surprised at the results.

$1 - $5 per student Ages 6 - 14 30 to 45 minutes
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In this activity (on pages 4-5), learners make fake snow by adding water to the super-absorbant chemical from diapers, sodium polyacrylate.

1 cent - $1 per group Ages 6 - adult 10 to 30 minutes
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Create an illusion where it appears that your hand has a hole in it. You'll see the results from when one eye gets conflicting information.

1 cent - $1 per student Ages 4 - 14 Under 5 minutes
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In this engineering design challenge, learners make a bubble maze that allows bubbles to move through a series of “on” and “off” switches.

$5 - $10 per group Ages 4 - 18 1 to 2 hours
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In this activity, learners build a racecar using only a rubber band, spool, straw, and paper clip! This racer is a classic toy that zips across a flat surface.

1 cent - $1 per student Ages 6 - 11 30 to 45 minutes
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In this activity, learners will create a speaker using a paper cup, magnet, and enameled wire. Also included in this activity is a Mr.

$5 - $10 per student Ages 6 - 11 10 to 30 minutes
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In this activity, learners cook amino acids and sugar to explore the range of aromas released.

$10 - $20 per group Ages 6 - 14 Under 5 minutes
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Learners observe a sealed container holding a clear colorless liquid. They shake the container and the fluid turns blue. When allowed to sit for a few moments, the fluid turns colorless again.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this activity about gravity (page 6 of the PDF), learners will come to understand how all objects will fall at the same rate, but that air will slow things down.

1 cent - $1 per student Ages 4 - 8 5 to 10 minutes
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In this playful, goopy activity, learners mix two liquids to create a solid (that sometimes acts like a liquid ), using basic household materials such as borax and glue.

$1 - $5 per student Ages 6 - 11 45 to 60 minutes
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In "Exploring the Universe: Exoplanet Transits," participants simulate one of the methods scientists use to discover planets orbiting distant stars.

1 cent - $1 per student Ages 6 - 14 5 to 10 minutes
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In this activity, learners mix white craft glue and borax solution together to produce a surprising new material: GOOP!

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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In this activity (on pages 13-16 of the PDF) learners investigate three mystery samples to see which one contains life. The three samples are sand, sand and yeast, and sand and antacid.

1 cent - $1 per group Ages 4 - 14 30 to 45 minutes