A fully resourced lesson that explores the DTM in an active way. Written specifically for the AQA GCSE 9-1 course and fully updated. The power-point covers the key definitions and includes video links. The main activity is a market place/carousel task in which the students move around the room collecting the information for each stage. The information sheets are in colour for high impact and would benefit from laminating to ensure they can be reused year after year. The syllabus refers to Nigeria but the pyramid is only just entering stage 3 so I have also included Brazil, as it shows the difference from stage 2 far more clearly. The information makes references to policies in Nigeria as it is used as a case study elsewhere in the course.