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In this three-part activity, learners conduct simple experiments to see how light refracts and reflects, and how colors of light affect what we see.

$5 - $10 per student Ages 8 - 18 45 to 60 minutes
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In this activity (on pages 34-39), learners make a fairly detailed model of DNA using licorice and gumdrops.

$1 - $5 per group Ages 8 - 14 45 to 60 minutes
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In this activity, learners use ABS pipe and an air leaf blower to make a strong shooting machine.

Over $20 per group Ages 11 - adult 1 to 2 hours
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In this optics activity, demonstrate diffraction using a candle or a small bright flashlight bulb and a slide made with two pencils.

$5 - $10 per student Ages 8 - 18 10 to 30 minutes
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Play with a slinky and make transverse waves. In this simple Exploratorium Science Snack, learners will experience making waves and will learn the different parts of a wave.

free Ages 6 - 14 Under 5 minutes
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In this activity (posted on March 12, 2011), learners follow the steps to construct a spectroscope, a tool used to analyze light and color.

$10 - $20 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners conduct tests for proteins, glucose, and starch.

Over $20 per group Ages 11 - 18 1 to 2 hours
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Learners can program a compass to draw a circle by itself using a Pico Cricket, some Legos, and lots of tape! Pico Cricket is required.

Over $20 per group Ages 8 - adult 45 to 60 minutes
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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.

$1 - $5 per student Ages 8 - 18 5 to 10 minutes
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Learners work with plastic sheeting, masking tape, and string to design the perfect material for plastic chair webbing, and then construct their webbing.

$10 - $20 per group Ages 11 - 14 1 to 2 hours
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In this activity, learners interpret three trackways and use measurements and a formula to infer the relative speed of dinosaurs.

free Ages 11 - 14 45 to 60 minutes
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In this activity, learners explore acid and bases as they create their own invisible ink out of baking soda and grape juice.

$1 - $5 per student Ages 4 - 18 10 to 30 minutes
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In this activity, learners make their own bath bomb fizzies and experience what happens when they mix a base and an acid.

$10 - $20 per student Ages 4 - 14 10 to 30 minutes
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In this experiment, learners work in pairs to create two gloves -- one that contains a layer of shortening (blubber) inside, and one that doesn't.

$5 - $10 per student Ages 8 - 14 10 to 30 minutes
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How does a green roof, or roof covered by plants, affect the temperature of the inside and outside of a building? Learners design and build houses to find out the answer.

$1 - $5 per group Ages 11 - 14 1 to 2 hours
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In this activity, learners build edible models of Jupiter and Earth to compare their sizes and illustrate the planets' internal layers.

$10 - $20 per group Ages 8 - 14 30 to 45 minutes
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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.

$10 - $20 per group Ages 6 - 18 30 to 45 minutes
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In this activity, learners will construct an air cannon as a model for the human ear.

$1 - $5 per student Ages 11 - adult 10 to 30 minutes
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In this quick activity, learners observe how wind creates ocean currents.

$1 - $5 per group Ages 6 - 14 5 to 10 minutes
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In this activity, learners design a crushing test and discover that identifying and controlling the variables may be difficult.

$1 - $5 per group Ages 8 - 14 10 to 30 minutes