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• ebooks

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• Audiobooks

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  1. OverDrive Listen audiobook 167

• Subject

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  1. Science 1,557
  2. Nonfiction 801
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  4. Nature 496
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• Interest Levels

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  1. Lower Grades (K–3) 99
  2. Middle Grades (4–8) 44

• ATOS Levels

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  1. 0.0–1.0 7
  2. 1.0–2.0 31
  3. 2.0–3.0 17
  4. 3.0–4.0 44
  5. 4.0–5.0 22
  6. 5.0–6.0 11
  7. 6.0–7.0 8
  8. 7.0–8.0 3

• Lexile® Measures

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  1. BR–200L 9
  2. 200L–400L 4
  3. 400L–600L 32
  4. 600L–800L 68
  5. 800L–1000L 6
  6. 1000L–1200L 4

• Text Difficulty

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  1. Kindergarten 79
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  4. Grade 3 107
  5. Grade 4 26
  6. Grade 5 12
  7. Grade 6 5
  8. Grade 7 1
  9. Grade 8 1