Order Matters

When studying, it has been shown that you will retain what you start with and what you end with much better than the stuff in the middle. So, practice in a random order. I say practice because, what if you are learning how to play an instrument? If you always start with the same scales, you will certainly learn the first scale better than the rest. You will also learn scales better than whatever else you practice, since you begin to fatigue after a some amount of practice. Rotate the order in which you practice things, and you will learn the material rather than the order the material is presented. The same goes for subjects in school and for problems within the subjects.