Ian's Crossword Puzzle

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Across
  1. 2. your sister's name
  2. 4. two people or objects
  3. 6. a math function
  4. 7. higher level of school
  5. 8. beginning level of school
  6. 10. a virtual game
Down
  1. 1. a thing that is unknown
  2. 2. has letters p and h which make what sound?
  3. 3. used to look up the meaning of words
  4. 5. a Christmas decoration
  5. 9. an action you use with a ball