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If you had a long tube with a 5 millimeter wide slit, would you see the entire Golden Gate Bridge?

1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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This activity shows learners how computers use numbers to represent pictures. A grid is used to represent the pixels (short for picture elements) of a computer screen.

1 cent - $1 per student Ages 6 - adult 30 to 45 minutes
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In this science trick, learners get an egg to stand-up on its long-axis vertical to a table's top.

1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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In this activity, learners take a turn contributing a closed figure made of six squares to a large grid; each must be different from all the others on the grid so far.

1 cent - $1 per group Ages 4 - 14 5 to 10 minutes
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Balance a ball in the air with a hair dryer! This Exploratorium produced activity shows learners concepts like lift and air streams. You can try many different angles, speeds, and ball types.

1 cent - $1 per student Ages 4 - 18 Under 5 minutes
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In this activity, learners explore gravity and air pressure as they experiment with holding a glass full of water upside down, without spilling it, using a simple piece of cardstock.

1 cent - $1 per student Ages 6 - 14 10 to 30 minutes
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Create airplanes from straws and geometric shapes. Test them out to see how far they can fly, or how accurately they can be aimed.

1 cent - $1 per student Ages 4 - 14 30 to 45 minutes
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Which one of your eyes are dominant? Do they act independently or are they equally "in control?" This activity explores how your eyes work (or don't work) together.

1 cent - $1 per student Ages 6 - 14 Under 5 minutes
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In this simulation activity, learners will raise a pack of wolves under ten different conditions: without human interference and with human interference.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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In this optics activity, learners discover how they can make glass objects "disappear." Learners submerge glass objects like stirring rods into a beaker of Wesson™ oil to explore how the principles of

1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners thread gumdrops together to make a model of a polymer.

1 cent - $1 per student Ages 8 - adult 10 to 30 minutes
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Discover how sound travels and what materials make better sound conductors. Can you hear better with your fingers in your ears? Find out with a coat hanger and some string!

1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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In this activity, learners cut out and assemble wheels to explore how variations in fish body structures (mouth shape/position/teeth, body shape, tail shape, and coloration patterns) allow fish to sur

1 cent - $1 per group Ages 4 - adult 10 to 30 minutes
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Learners describe objects in a room using only numbers and shapes. They can measure the object (like a desk) and make a list of facts about it (e.g.

1 cent - $1 per group Ages 8 - 11 10 to 30 minutes
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In this simple activity, learners discover how a mere piece of paper can be used to hold up the weight of a heavy book.

1 cent - $1 per student Ages 6 - 11 10 to 30 minutes
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In this activity, learners use mirrors to write secret messages to a friend. Use this activity to explore letters, optics, and/or symmetry.

1 cent - $1 per student Ages 6 - 11 5 to 10 minutes
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What's a more compelling problem to solve than being stranded on a deserted island?

1 cent - $1 per student Ages 6 - adult 30 to 45 minutes
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In this chemistry activity, learners witness an exothermic reaction, while making their very own, completely usable sidewalk chalk. This is also an excellent activity for exploring color mixing.

1 cent - $1 per student Ages 8 - 14 30 to 45 minutes
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In this computer science activity about finite-state automaton (on page 45 of the PDF), learners use a map and choose various pathways to find Treasure Island.

1 cent - $1 per student Ages 8 - 14 45 to 60 minutes
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In this activity, learners use cooperation and logical thinking to find solutions to network problems on the playground.

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