Classword puzzle

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Across
  1. 2. instruments
  2. 3. learn about the world and how it used to be
  3. 4. atoms
  4. 7. learn about God
  5. 9. numbers
  6. 11. go outside
Down
  1. 1. the school you're in
  2. 5. food
  3. 6. a language
  4. 8. PE
  5. 10. paint