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In this activity, learners explore how the area of Arctic sea ice has changed over recent years. First, learners graph the area of Arctic sea ice over time from 1979 to 2007.

free Ages 11 - 18 45 to 60 minutes
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Coins are everyday objects which tell a lot about the people who use them.

1 cent - $1 per student Ages 6 - 14 10 to 30 minutes
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In this activity, a group of learners work collaboratively to design and construct a paper model showing the evolution of an environment through multiple stages, from prehistory through the modern cit

$1 - $5 per student Ages 8 - 14 1 to 4 weeks
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In this activity, learners investigate the history and development of agricultural biotechnology.

$10 - $20 per group Ages 11 - 14 45 to 60 minutes