To prsce24:
they're partly correct.
to finish the whole 4U in a year is not easy.
and the lessons might be spent just going through the theory and proving statements or formulae and doing a few questions together (in my school we do the worked examples from textbook(s) on a photocopied handout with the workings and answers being omited). the exercises are done at home. we've just finished the 4U topics now, and havent talked about the harder 3U topics (which is a component in the 4U course).
just an advice: read ur textbook
slowly and
repeatedly and im sure you'll understand. try to make sure u know how the textbook moves from a line to the next line of working, in the worked examples (this is particularly true for Cambridge textbook.. it's not user friendly at all!
and you can see how they desperately want to save space by putting everything on one line... a bit like my summaries lol but textbooks shouldnt be doing that).
if u cant seem to understand a section or paragraph after reading it a few times, move to the next section or paragraph (to get an overal picture, and to refresh your mind) and come back later. be persistent and not easily turned off.