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Learners investigate why the Sun and Moon appear the same size in the sky even though the Sun is over 400 times larger in diameter.
1 cent - $1 per group Ages 8 - 11 10 to 30 minutes

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Learners discover that their breath contains carbon dioxide, one of the pollutants found in car exhaust.
1 cent - $1 per group Ages 8 - 11 5 to 10 minutes