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In this activity (on page 2 of PDF under GPS: Roller Coaster Design Activity), learners will use food cans of many different properties (sizes, shapes, and weights) and set two cans on their sides at

free Ages 8 - 14 45 to 60 minutes
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In this activity on page 11 of the PDF, learners use candle wax to make "invisible" designs that are revealed with watercolor paints.

$1 - $5 per student Ages 6 - 11 5 to 10 minutes
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This activity (on page 3 of the PDF under GPS: Baseball Activity) is a full inquiry investigation into how "bounciness" relates to the distance a ball will fly when hit off a batting tee.

$5 - $10 per group Ages 8 - 14 1 to 2 hours
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In this activity, learners will use Google Sky to observe features of the night sky and share their observations.

free Ages 4 - 11 10 to 30 minutes
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Discover the wind's direction using bubbles, a map and a keen eye. Learners blow bubbles and note their general direction on a map, taking readings from different points around a building.

1 cent - $1 per student Ages 6 - 11 30 to 45 minutes
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In this activity about the brain and sleep (on page 138 of the PDF), learners measure their resting breathing rates. Learners will discover that breathing frequencies vary amongst individuals.

1 cent - $1 per group Ages 8 - 18 45 to 60 minutes
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In this activity, learners conduct a simulation exercise related to public key encryption and try to intercept a message sent between two learners.

free Ages 11 - 18 30 to 45 minutes
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In this activity, learners use a pneumatic trough (see related activity) to generate and collect pure oxygen.

Over $20 per student Ages 14 - adult 30 to 45 minutes
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In this activity about ramps, learners explore and measure the rate at which spherical objects roll down a ramp.

$1 - $5 per group Ages 4 - 8 45 to 60 minutes
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In this activity, learners create a simple “top” from a CD, marble and bottle cap, and use it as a spinning platform for a variety of illusion-generating patterns.

$1 - $5 per student Ages 8 - 18 10 to 30 minutes
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In this activity, learners explore the different salinities of various sources of water by taste-testing.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners working in pairs saturate a cotton ball using water drops from an eyedropper to demonstrate the high water capacity of clouds.

1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners investigate how different materials repel or absorb water. Learners use spray bottles to explore how everyday items like sponges, cardboard, feathers, etc.

$1 - $5 per group Ages 4 - 8 30 to 45 minutes
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Learners follow a three-step process to start their own rock collection.

$1 - $5 per student Ages 8 - 14 1 to 7 days
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In this online activity, learners adjust mountain snowfall and temperature to see how glaciers grow and shrink. They will use scientific tools to measure thickness, velocity and glacial budget.

free Ages 8 - adult 10 to 30 minutes
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In this experiment, learners work in teams to investigate how the color of a surface influences its ability to reflect light and therefore heat.

$1 - $5 per group Ages 11 - 18 45 to 60 minutes
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In this activity, learners experiment with creating various types of bubble solutions and testing which ingredients form longer-lasting bubbles.

$10 - $20 per student Ages 11 - 14 45 to 60 minutes
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In this math lesson, learners learn how to construct stem and leaf plots. Learners first estimate the number of drops of water that will fit on the head of a penny.

1 cent - $1 per group Ages 11 - 14 45 to 60 minutes
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This simple, yet surprising physics demonstration challenges preconceptions about forces, and demonstrates the strength of atmospheric pressure.

free Ages 4 - adult Under 5 minutes
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In this activity on page 4 of the PDF (Get Cooking With Chemistry), learners investigate ingredients that combine to produce gas bubbles.

$10 - $20 per student Ages 8 - 14 45 to 60 minutes