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Dunking the Planets
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In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.

Design a Flavor: Experiment to Make Your Own Ice Cream Flavor!
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In this delicious activity, learners get to make, taste-test and compare their own "brands" of homemade strawberry ice cream.

Mixing and Unmixing in the Kitchen
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In this chemistry investigation, learners combine common cooking substances (flour, baking powder, sugar, salt, pepper, oil, water, food coloring) to explore mixtures.

Gumdrop Chains and Shrinky Necklaces
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In this activity, learners thread gumdrops together to make a model of a polymer.

Candy Chromatography
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Learners analyze candy-coated sweets using chromatography. Learners use this method to separate the various dyes used to make colored candy.

Art with Salt and Ice
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This open-ended art project allows learners to create their own colorful ice sculpture by using rock salt and food coloring on a solid block of ice.
Pepper Scatter
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In this activity, learners explore the forces at work in water. Learners experiment to find out what happens to pepper in water when they touch it with bar soap and liquid detergent.

Toast a Mole!
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In this quick activity, learners drink Avogadro's number worth of molecules - 6.02x10^23 molecules!

Eggshell Inertia
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In this physics activity (page 14 of the PDF), learners gain a better understanding of how friction and mass affect objects by comparing the rotational inertia of raw and hard-boiled eggs.

Take an Egg for a Spin
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This is an activity about friction as well as kinetic and potential energy.
Growing Rock Candy
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In this activity, learners make their own rock candy. Crystals will grow from a piece of string hanging in a cup of sugar water. The edible crystals may take up to a week to form.

Casting and Molding
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This activity was designed for blind learners, but all types of learners can explore the process used to cast and mold molten metal, glass, and plastics.

Scream for Ice Cream
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Don't scream for ice cream -- make it with milk, sugar, flavoring and some 'salt-water' ice. Discover the chemistry of ice cream by creating your own.

Chocolate (Sea Floor) Lava
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In this edible experiment, learners pour "Magic Shell" chocolate into a glass of cold water. They'll observe as pillow shaped structures form, which resemble lavas on the sea floor.

Condiment Diver
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In this hands-on activity, learners make the world's simplest Cartesian diver, using only a plastic bottle, some water, and a condiment packet.

Color-Changing Carnations
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Learners place cut flowers in colored water and observe how the flowers change. The flowers absorb the water through the stem and leaves.

Geyser
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This Exploratorium activity can be used in many contexts because geysers are great opportunities for learning about heat and temperature changes as well as geological/space science phenomena.

Cat's Meow
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In this chemistry activity, learners are asked to form a hypothesis about the behavior of milk as household detergents act upon it.

Instant Ice Cream
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In this activity, learners make instant ice cream without using a freezer.

Guar Gum Slime
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In this activity, learners create a gelatinous slime using guar gum powder and borax. Educators can use this simple activity to introduce learners to colloids.