I'd like to able to follow discussions/arguments about maths education, but many of them revolve around the transition to new math.
I was taught in the UK in the early 90s, and none of the examples or explanations look substantially different to how I do it.
What was 'old math' and how was it taught? When an older person says they don't understand all of this 'places' and 'borrowing' nonsense, what are they expecting to see instead?
Is the difference primarily in notation or in the actual algorithm used?