That is, math is not steps to be memorized, but concepts to be learned and then practiced in the various ways the concept can be applied. What is not used is easily lost or forgotten. Rehearsals practice on a current scene and then go back and put the previous ones with it for a practice. When a chapter is completed, the chapter review must be done. This is comparable to practicing the whole act once the last scene is mastered.
Most textbooks have chapter reviews.
When the last chapter review that marks the cut-off of material for a test is done, it's time for dress rehearsal. It's now too late to go back and study any one concept that wasn't clearly understood before. Even if it were quickly studied before the curtain opened, it's not possible to do an even mediocre performance without prior practice time. Dress rehearsal to prep for opening night is similar to going to the Math Lab and checking out an exam that was previously given in the class. Check your work against the answer key when you are done.