This short PPT outlines the different uses for “used to” and “would” to talk about the past. It aims to explain very briefly how and why these phrases are used, giving some examples and practice. It is intended to be taught by a teacher who knows at least the basics of this grammar point.
It might be necessary to teach your students more about action and state verbs prior to introducing this point. I only give examples to show the difference in this PPT.