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In this activity, learners discover how to determine the distance to a lightning strike or nearby thunderstorm.

free Ages 6 - 14 5 to 10 minutes
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In this activity on page 27, learners perform an experiment to learn about how different types of marine debris degrade and how weather and sunlight affect the rate of degradation.

$1 - $5 per group Ages 8 - 14 1 to 12 months
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In this activity, learners create a CloudSpotter wheel and record the different types of clouds they observe twice daily over several days.

free Ages 8 - 14 1 to 7 days