General Science
101 Science - Free (5, 6)
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Science VL - Free (5,6)
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Animals and Nature
The Weather Channel - Free (All) Explore weather from around the country.
TreeBook - Free (All)
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LeafSnap - Free (All)
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Astronomy
Cosmic Discoveries - Free (5,6)
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Hubble Top 100 - Free (5,6)
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