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Make a model city happier with LEDs, circuits, motors, and batteries! Groups can think, discuss, design, and build what would make a community happy. Kids can work as part of a team or on their own.

$1 - $5 per student Ages 8 - adult 30 to 45 minutes
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In this experiment, learners will explore whether increased carbon dioxide makes our oceans more basic or more acidic.

$1 - $5 per student Ages 11 - 18 30 to 45 minutes
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In this activity, learners demonstrate the effects of cold-working (strain-hardening) and annealing. Learners discover that these processes change the load that a wire can support.

$1 - $5 per group Ages 14 - adult 2 to 4 hours
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Learners use compasses to detect the magnetic field created by current moving through a wire. This is one of four activities learners can complete related to PhysicsQuest 2008.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this activity (4th activity on the page), learners test to see if saliva is necessary for food to have taste.

$1 - $5 per group Ages 8 - 18 5 to 10 minutes
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In this genetics activity, learners create and decode a “DNA recipe” for a dog by randomly selecting strips of paper that represent DNA.

$1 - $5 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners will write a secret message that only their friends will be able to read.

$1 - $5 per student Ages 8 - adult 10 to 30 minutes
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Break open that used musical toy and squish some Play-Doh over the circuit boards, and you will hear some weird and distorted sounds the manufacturer never intended!

$1 - $5 per student Ages 4 - adult 45 to 60 minutes
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In this activity, learners set up an experiment to investigate the effects of hot air on the path of a laser beam.

$1 - $5 per group Ages 14 - 18 45 to 60 minutes
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This demonstration/activity helps learners understand why higher elevations are not always warm simply because "hot air rises." Learners use a tire pump to increase the pressure and temperature inside

$1 - $5 per group Ages 8 - 18 10 to 30 minutes
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Many common household cleaners are antimicrobials.

$1 - $5 per group Ages 8 - adult 10 to 30 minutes
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In this activity, learners explore the design of tall structures such as skyscrapers and telecommunication towers.

$1 - $5 per group Ages 8 - 18 1 to 2 hours
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Learners pour equal amounts of coffee, mineral oil, corn syrup, and alcohol into a beaker. The liquids resolve into stacked layers, and learners can infer which liquids are the most and least dense.

$1 - $5 per group Ages 11 - 18 10 to 30 minutes
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In this outdoor activity, learners discover how the environment around a building affects the growth of plants.

$1 - $5 per group Ages 6 - 18 30 to 45 minutes
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In this activity, learners explore the devices used over time to measure changes in temperature.

$1 - $5 per group Ages 8 - 18 1 to 2 hours
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In this activity, learners observe colors in the flame of a burning candle to explore connections between matter, light, color and temperature -- basic concepts of matter and energy.

$1 - $5 per group Ages 14 - 18 45 to 60 minutes
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In this activity, learners explore how engineers use scales and measures when designing a manufacturing process to ensure that final products are uniform in weight or count.

$1 - $5 per group Ages 11 - 18 2 to 4 hours
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In this activity about olfaction (7th activity on the page), learners use natural ingredients to concoct their own perfume.

$1 - $5 per group Ages 8 - 18 4 to 24 hours
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This is a guide for facilitating interaction at a touch tank with marine animals. The instructions are for setting up a display in an informal science center, but could work anywhere.

$1 - $5 per group Ages 4 - adult 10 to 30 minutes
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With a magnet, iron fillings, and a bottle, you can create a cool demonstration about magnetic lines of force: the fillings will arrange themselves within the magnet's magnetic field.

$1 - $5 per student Ages 6 - 18 Under 5 minutes