@cstross @christineburns we went from pencils to ballpoints once it was time to use pens.
Not quite 60 yet, decimal / metric happened the year or so before I went to primary so I missed the change but it was still all new to the teachers which was a weird feeling; counting skills went up to 12 as a matter of course but no-one explained why or gave us anything to apply it to. Also calculators became a standard thing a year or so before we hit the exams, we got school-approved ones issued