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Showing results 41 to 47 of 47

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In this activity, learners will listen to as many radio stations as possible to discover that AM radio signals can travel many hundreds of miles at night.

free Ages 8 - 18 1 to 2 hours
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In this activity, learners use simple items to construct a device for indicating air pressure changes.

$1 - $5 per student Ages 8 - 18 1 to 4 weeks
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In this activity, learners use chocolate to explore how the Sun transfers heat to the Earth through radiation.

1 cent - $1 per group Ages 6 - 14 10 to 30 minutes
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In this activity and/or demonstration, learners illustrate visually and physically that air has weight. Learners balance two equally-inflated balloons hanging from string on a yard stick.

1 cent - $1 per group Ages 8 - 18 5 to 10 minutes
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In this activity, learners observe the hydrologic cycle in action as water evaporates and condenses to form rain right before their eyes.

1 cent - $1 per group Ages 4 - 14 10 to 30 minutes
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In this experiment, learners examine the way oil affects bird feathers and test different cleanup methods to find out which works best.

$1 - $5 per group Ages 6 - 14 10 to 30 minutes
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In this activity, learners create their own icons for a forecast-at-a-glance poster for their classroom/learning space.

$1 - $5 per group Ages 4 - 11 10 to 30 minutes