First figure out why you want the students to learn the subject and what you want them to know, and the method will result more or less by common sense.

There is nothing more uncommon than common sense.

Why is it that common sense is seldom common practice?

Genius ain't anything more than elegant common sense.

Working out another system to replace Newton's laws took a long time because phenomena at the atomic level were quite strange. One had to lose one's common sense in order to perceive what was happening at the atomic level.

Common sense is not so common.