School objects, class subjects in Spanish

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Across
  1. 1. spanish
  2. 4. science
  3. 7. english
  4. 8. pen
  5. 12. desk
  6. 15. board
  7. 16. window
  8. 17. notebook
  9. 18. history
  10. 20. paper
  11. 21. backpack
Down
  1. 2. pencil
  2. 3. art
  3. 5. chair
  4. 6. door
  5. 9. math
  6. 10. map
  7. 11. eraser
  8. 13. calculator
  9. 14. clock
  10. 19. chalk