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Why is the Sky Blue?

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In this activity, learners create a "mini sky" in a glass of water in a dark room.
1 cent - $1 per student Ages 6 - 14 Under 5 minutes

How Does Water Climb a Tree?

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In this activity, learners conduct an experiment to explore how water flows up from a tree's roots to its leafy crown.
$1 - $5 per student Ages 6 - 14 1 to 2 hours