So im in year 12 and for maths i understand the work but then recently was doing some questions and accidentally flipped back to a chapter i did around 1 or 2 months ago and looked it and i was unsure on how to do it. Even though i understand it at the time and practise questions at the time, how would i get to remember it through long term memory?? Im thinking about going back and doing those questions but then my workload would be quite big so any ideas??