Review part in the beginning or in the end of a new lesson?

[kursy]

As we all know, review is a very important part in learning language, but lots of students don't pay much attention on it and hardly review the lessons after class. So as teachers, we should emphaize this part in class. But when should we put review part in a lesson? At the begining or in the end of class?

[shaodantracy]

I think the review part should be put in at the beginning of the lesson, because the new lesson's review should be put in the end of the class.