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Showing results 161 to 180 of 799

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In this activity, Frankenstein's lab is running out of electricity! Learners use fruit to help Igor find a temporary source of energy to turn on a light.

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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In this activity, learners calculate the percentage of oxygen in the atmosphere by using steel wool's ability to rust.

1 cent - $1 per student Ages 11 - 18 1 to 7 days
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Learners observe two joined glass tubes containing a conductive salt solution. Electrodes are passing an electric current through the water.

$10 - $20 per group Ages 11 - adult Under 5 minutes
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This demonstration can be used to help learners visualize DNA by lysing (breaking open) bacterial cells on a slide and “stringing up” the DNA with a toothpick in less than one minute.

$10 - $20 per group Ages 11 - 18 5 to 10 minutes
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In the kitchen, learners can perform their own density investigation.

1 cent - $1 per student Ages 8 - 14 5 to 10 minutes
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In this activity (page 6 of the PDF), learners will observe both a chemical and a physical change.

Over $20 per group Ages 8 - 18 4 to 24 hours
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In this activity, learners investigate the effect of heat on a reaction.

$1 - $5 per student Ages 4 - 11 10 to 30 minutes
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Learners make a simple battery out of "sandwiches" of aluminum foil, pennies, and a salt water-soaked paper towel.

$1 - $5 per group Ages 8 - 14 5 to 10 minutes
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In this activity, learners experiment with the density of ice, water, and oil. Learners will discover that the density of a liquid determines whether it will float above or sink below another liquid.

$1 - $5 per student Ages 6 - 11 10 to 30 minutes
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Eggs are placed in vinegar for one or two days to dissolve the shells. Then, learners place the eggs in water or corn syrup and observe them over a period of days.

$1 - $5 per student Ages 6 - 14 1 to 7 days
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Learners experiment with a commercial photo-sensitive paper (Sunprint® or NaturePrint® paper). They place opaque and clear objects on the paper and expose it to bright light, observing the results.

$5 - $10 per group Ages 6 - adult Under 5 minutes
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In this activity, learners test the rate of ripening fruit and vegetables and use a chemical to inhibit the ripening process.

$10 - $20 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners will make homemade jello that glows under a blacklight. They will learn about quinine, an ingredient in tonic water that is fluorescent.

$5 - $10 per group Ages 8 - adult 10 to 30 minutes
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Learners use a simple process to extract DNA from strawberries.

$1 - $5 per group Ages 8 - 14 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 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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Did you know that some breakfast cereals are fortified with ferric phosphate, while others contain tiny pieces of reduced iron?

$1 - $5 per student Ages 8 - 14 10 to 30 minutes
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Learners observe an electrochemical cell constructed from a small jar containing zinc and copper strips immersed in separate solutions. The strips are connected to a motor that turns a small fan.

$5 - $10 per group Ages 11 - adult 10 to 30 minutes
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In this activity, learners follow a recipe to make hollandaise sauce. Learners discover how cooks use egg yolks to blend oil and water together into a smooth mix.

$1 - $5 per group Ages 6 - 14 5 to 10 minutes