Topic 8 Sustainability, Theory. International Baccalaureate - Diploma Program of Design Technology. This is a bundle containing 4 presentations, each filled with definitions, examples, images, explanations, videos, homework. A summative assessment for this unit is also available separately also.This is an HL topic, but can be taught to keen SL students as well, as it is extremely beneficial for the development of their IA. These resources were designed to make your life easier as a busy DT