KS3 Population Change and Migration - Full Unit with All Resources, including support for lower ability students and stretch (extensions) for higher ability students. Covers: Population Density Global Population Change The Demographic Transition Model (DTM) Population Pyramids Population Pressures (Overpopulation and Underpopulation) Population Control (Pro and Anti-Natal policies) China’s One Child Policy Ageing Populations Migration - Push and Pull Factors Migration within the EU Migration into the EU UK Population Issues