I Spy: Class Edition

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Across
  1. 1. The thing you check to see when 9:25 rolls around
  2. 4. This is that class
  3. 6. Fresh coasting this morning of it
  4. 8. Mrs. _______
  5. 10. I see you on these days.
  6. 12. Dry erase ______.
  7. 13. You'll do this math next year.
  8. 16. These things are mainly used for writing in math class.
Down
  1. 2. On the ceiling
  2. 3. Add up with efficiency with these. Abbreviation.
  3. 5. This is the type of math we do.
  4. 6. This things keeps the pencils pointy.
  5. 7. I think we are all ready for one.
  6. 9. _____ line
  7. 11. I swear!
  8. 14. Dry _____ board.
  9. 15. This is that block