This fully resourced lesson is centred around a fun practical where students model the rock cycle using chocolate. It includes: Powerpoint slides with full explanations and accompanying notes Double-sided A3 worksheet for students to complete throughout the lesson Vocabulary retrieval starter Discussion opportunities (Think, Pair, Share) about the value of modelling in science Aims, safety and method of the practical Reflection questions to direct discussion and consolidate understanding after the practical Exam-style question End-of-unit plenary Cosmetic design of the lesson is inspired by the excellent Ozocat21, who has outstanding resources for the whole unit.