A World of Maths

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Across
  1. 2. A funny image spread on the internet.
  2. 5. ...outside the box.
  3. 6. What teachers do.
  4. 7. A synonym of "affirmation".
Down
  1. 1. A synonym of "to require".
  2. 2. The American spelling of the topic of our unit.
  3. 3. The person who speacialises in mathematics.
  4. 4. The British spelling of the topic of our unit.
  5. 8. A synonym of "relation".