Seasons, months, days of the week.

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Across
  1. 2. The end of school
  2. 4. School starts
  3. 6. It's summer time
  4. 7. St. Valentine's day
  5. 8. Season with flowers
  6. 9. The third day of the week
  7. 12. Halloween
  8. 13. We see falling leaves
Down
  1. 1. It's Christmas
  2. 3. it's Easter time
  3. 4. the seventh day of the week
  4. 5. the fifth day of the week
  5. 6. The first of the year
  6. 10. It's hot and the school is closed
  7. 11. the first day of the week