Calculations

• It's prior knowledge (so do prepare if it's not)
• Choose procedures
  • do exercises without such hint
  • think about:
    • why did that procedure work
    • what could be changed in the question so that it would still work
    • what could be changed in the question so that it would not work (limitations of the procedure)
    • could i modify the procedure so that it would work for some of these cases...