This is a range of lessons (2/3) covering variation, continuous and discontinuous and differences. Differences lesson: consists of 'find someone who' kagan starter to access prior knowledge. Pupils then watch a clip and identify whether differences are inherited or environmental. Lesson has a secret agent theme resulting the pupils creating their own security badge identifying inherited and environmental features. They will also ass their fingerprint using a inkpad (stretch and challenge link to biometrics). Continuous and discontinuous variation lesson: gives examples of each type of data, based on a graph lesson, comes with mark scheme. both use levels but these can be easily changed to grades.