All about me

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Across
  1. 3. Number of pets
  2. 5. School I attend
  3. 6. MindStorms
  4. 7. Something I think about a lot
  5. 9. A very advanced function in Mathematics
  6. 10. Best Birthday present ever and used to look at the stars
  7. 11. My age
  8. 12. One of the things I like to collect also currency
Down
  1. 1. Hardest substance on Earth
  2. 2. Something extremely advanced in mathematics clue Calculus
  3. 4. Great for making explosions virtually anyway
  4. 7. The thing I like to use while riding
  5. 8. My favourite computer game