Teacher Discussion Forums

In my opinion, the review part shoudn't be put at the beginning. If so, students will be lose interest in the new lesson and it will be difficult to draw their attention again.

review of course should be introduced in the end of the class, but i think if you use review as the warm up to refresh students' old knowledge, it's no problem to put review at the beginning in the class.

I think you just answered your own question.