Personal items

123456789101112131415161718
Across
  1. 5. You erase pencil marks with it
  2. 9. You sharpen pencils with it
  3. 11. You put your school books in it
  4. 13. The title of a song by Rihanna
  5. 15. You write stuff with this
  6. 16. You wear it to go go out if it's a little cold.
  7. 17. It tells you the hour
  8. 18. You write notes on this item
Down
  1. 1. You play music with this thing
  2. 2. You use it as a computer
  3. 3. An item that contains pens and pencils
  4. 4. You draw lines on paper with it
  5. 6. You call or text people with it
  6. 7. Books you use at school
  7. 8. People wear them to see better
  8. 10. You do math operation with this item
  9. 12. A small piece of paper shaped as a square
  10. 14. Teacher: "Do __________ 5 at page 9, please!"