tuesday puzzle

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Across
  1. 2. - Assignments to be completed outside of class
  2. 5. - Place for books and research materials
  3. 9. - Study of the natural world
  4. 10. - Activity in the water
  5. 11. - Learner in an educational institution
  6. 12. - Hidden riches
  7. 14. - Writing tool
  8. 17. cream - Cold and creamy treat
  9. 20. - Sweet treat
  10. 21. - Head of a school
  11. 23. - Exciting journey
Down
  1. 1. - Study of numbers and shapes
  2. 3. - Collection of stars
  3. 4. - Bright source of light
  4. 6. - Dense forest
  5. 7. - Solves crimes
  6. 8. - Unknown or secret
  7. 13. - Bright and warm sunlight
  8. 15. - Bag for carrying books and supplies
  9. 16. - Colorful arc in the sky
  10. 18. - Measuring tool
  11. 19. - Educator in a classroom
  12. 22. - Sandy shore by the sea