A lesson for the topic of Development. Ideal for years 7 to 9. Previously taught in a 1hr lesson. In this lesson, pupils will explore the five stages of the Demographic Transition Model. Spelling homework from the previous lesson in the series (Measuring development) is early in the presentation but optionally delete the slide if you have not taught it. The first part of this lesson introduces population pyramids and the DTM to the pupils. The first activity sees the pupils decide on suitable missing words in a Stages of the DTM worksheet, before the final activity where the pupils must decide where certain scenarios would place on the DTM. Easier to do as a numbers exercise, with the pupils sticking the sentences above their DTM's in their books.