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Showing results 1921 to 1940 of 2169

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In this activity, learners explore how the application of nano-sized particles or coatings can change a bigger material’s properties.

Over $20 per group Ages 4 - adult 10 to 30 minutes
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In this activity about saturation (page 1 of PDF under SciGirls Activity: Sand Dunes), learners will build a series of sand castle towers using a 16 oz cup.

$5 - $10 per group Ages 8 - 14 45 to 60 minutes
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In this outdoor activity, learners saw sections from fallen trees, then count tree rings and look closely at patterns of tree growth.

$10 - $20 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners compare the ancient Egyptian system of measurement, which was based on body lengths, to the customary and metric systems used today.

1 cent - $1 per group Ages 6 - 11 10 to 30 minutes
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In this activity, learners create colorful bead bracelets to wear outside while searching for matching colors in plants. Learners will be surprised by the variety of colors in nature.

$5 - $10 per group Ages 4 - 8 45 to 60 minutes
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In this quick activity (page 1 of PDF under SciGirls Activity: Lift Off), learners will use the ever-popular soda geyser experiment to test the reactivity of the various sugar candies or mints.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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In this outdoor activity, learners release a portion of a lawn from human control—no mowing, no watering, no weeding, no pest control—and then investigate the changes that result over several weeks.

Over $20 per group Ages 6 - 14 1 to 12 months
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In this outdoor activity, learners cut through and investigate rotten logs and then make log-profile puzzles for each other.

Over $20 per group Ages 8 - adult 45 to 60 minutes
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In this field study, learners discover how to collect data in the field and how their efforts can help certain animals, specifically, amphibians.

Over $20 per group Ages 8 - adult 2 to 4 hours
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In this chemistry demonstration, learners will discover that phenolphthalein is an acid/base indicator. One learner will read a poem about four witches making a potion.

$1 - $5 per group Ages 11 - 18 5 to 10 minutes
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MarsBound! is an engineering simulation activity in which learners use realistic techniques to plan a mission to Mars.

free Ages 8 - 18 2 to 4 hours
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In this activity (on pages 9-14), learners dissect a real flower -- the kind of work botanists do.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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This activity is designed to introduce learners to genes, genotypes and simple inheritance patterns.

1 cent - $1 per student Ages 11 - 18 45 to 60 minutes
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In this family or group activity, learners conduct a chromatography experiment to reveal the colors that leaves "hide" under their green pigments.

$1 - $5 per student Ages 6 - 14 45 to 60 minutes
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In this optics activity, learners discover that not all shadows are black. Learners explore human color perception by using colored lights to make additive color mixtures.

$5 - $10 per group Ages 6 - 18 5 to 10 minutes
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In this graphing activity (on pages 33-40), learners investigate how much and what kinds of food sea otter pups eat during their first year of life.

1 cent - $1 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners explore how two cylinders that look the same may roll down a ramp at different rates.

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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This is an activity in which learners explore the effects of gravity, motion and momentum while creating art.

$5 - $10 per group Ages 4 - 6 10 to 30 minutes
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Learners investigate how the temperature of water affects its density.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes
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Learners create an electrical-circuit maze out of wire, then try to pass a paperclip through the maze without touching the wire.

$1 - $5 per group Ages 11 - 14 1 to 2 hours