Across
- 3. board
- 5. rubber
- 7. classroom
- 9. ruler
- 10. tick
- 13. book
- 15. teacher
- 17. pen
- 18. keyboard
- 19. music
- 20. line
- 21. desk
Down
- 1. floor
- 2. alphabet
- 4. eraser
- 6. test
- 7. computer
- 8. open
- 11. close
- 12. pencil
- 14. cross
- 16. class
- 17. page
- 19. mouse