3 ms·

What do you mean?

• agumonkey 9y ago
  in primary school the focus in expressions involving = is reduction more than equality: 2 + 2 = 4 <n terms> = <constant> I don't recall teacher showing you equalness through stupid but important ideas: 2 + 2 = 2 + 2 2 + 2 = 2 + 1 + 1 all these are equal, and it's important later on when expression, with variables, aren't reducible to a constant but to another expression which is equal to the other one. IMO it would help a lot for people to try to simplify a problem into a known identity or interesting form (for instance the 'trick' of adding and subtracting one to get closer to binomial formula or other)