One my personal trick: imagine that you are magically transported into the 19-th century (or earlier). Can you teach the subject to a well-known scientist of that era?
E.g. if you want to explain radioactivity to somebody from 1860-s, how would you do that? Or for math, how would you explain calculus to Archimedes?
E.g. if you want to explain radioactivity to somebody from 1860-s, how would you do that? Or for math, how would you explain calculus to Archimedes?