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In this activity, learners will use cereal to conduct an experiment and investigate how decreased bone density is related to increased risk of bone fracture.

$5 - $10 per group Ages 8 - 18 1 to 2 hours
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Learners use filter paper and water to analyze six different markers. They mark the paper with ink, and dip the paper in water. The water travels up the paper and dissolved ink travels with it.

$1 - $5 per group Ages 4 - 14 5 to 10 minutes
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In this activity, learners will examine various world data maps to combine the information and predict which areas could be tropical rainforests.

1 cent - $1 per group Ages 8 - 14 45 to 60 minutes
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In this movement and measurement activity, learners jump as far as they can three times, and compare their longest jump to the longest jump of their friends, classmates and/or family members.

$1 - $5 per student Ages 6 - 18 10 to 30 minutes
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Do you have an extra portable cassette tape player hanging around?

1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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In this activity, learners will trick out their bike with crafts and flair. Learners will explore symmetry, cause and effect and design through this activity.

$1 - $5 per student Ages 4 - 14 30 to 45 minutes
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Learners mix vinegar and baking soda to produce a gas. With the addition of a bit of liquid soap, the gas becomes trapped in measurable bubbles.

$1 - $5 per group Ages 8 - 14 30 to 45 minutes
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This activity uses turmeric, a common spice in curry, as an indicator for acidity and basicity. Turmeric is yellow in acid and neutral substances, but turns bright red with bases.

$1 - $5 per student Ages 11 - 14 10 to 30 minutes
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This fun and simple hands-on astronomy activity lets learners imagine what would happen if our Sun were replaced with a black hole.

$10 - $20 per group Ages 6 - adult 10 to 30 minutes
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This fun and simple hands-on astronomy activity lets learners explore the difference between telescope magnification and resolution.

$1 - $5 per group Ages 4 - adult 10 to 30 minutes
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In this activity (on page 2 of PDF), learners create a low-tech refrigerator that requires no electricity to keep food from spoiling.

$1 - $5 per student Ages 8 - 18 1 to 2 hours
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Learners build a pendulum from a yo-yo, and then design their own experiment to determine what affects the pendulum's period of swing.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes
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In this activity, learners will explore two-dimensional shapes that are found in three-dimensional shapes. Learners will explore geometry, design, color and tool use through this activity.

$1 - $5 per group Ages 4 - 14 30 to 45 minutes
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What causes frost to form on the outside of a cold container? In this activity, learners discover that liquid water can change states and freeze to become ice.

1 cent - $1 per group Ages 8 - 14 10 to 30 minutes
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In this activity, learners will create their own lava lamps. Learners will explore density, effervescence and chemistry through this activity.

$1 - $5 per student Ages 4 - 14 30 to 45 minutes
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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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Learners use a commercially available toy to experiment with density. They fill a chamber in the toy submarine with baking powder and release it into a tank of water.

$1 - $5 per group Ages 4 - 14 5 to 10 minutes
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In this health and genetics activity, learners determine whether tasting the bitter compound PTC (phenylthiocarbamide) influences which vegetables a person likes.

$10 - $20 per group Ages 8 - 14 45 to 60 minutes
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This is a game that is sure to sharpen players' basic math skills. Players must use four randomly selected numbers to create an equation that equals a fifth number.

$1 - $5 per group Ages 8 - adult 30 to 45 minutes
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This activity (9th activity on the page) about hearing demonstrates to learners the importance of having two ears.

1 cent - $1 per group Ages 6 - 18 5 to 10 minutes