math and other stuffs

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Across
  1. 3. a higher up in education
  2. 5. we have a class for it
  3. 6. a important factor that makes algebra what it is
  4. 7. an educator
  5. 9. math with shapes
Down
  1. 1. pi
  2. 2. math with variables
  3. 4. the base of all math
  4. 8. what we just did