A self contained lesson on substitution for K34 or KS4 foundation pupils. Within the lesson contains a 10 question starter. The starter is designed in mind for retrieval and interleaving subjects from my own school scheme of work. The starter comes with incorrect and correct answers to help with identifying misconceptions and self assessment. The lesson is colour coded to help build a routine for my own learners. Slides includes opportunities for modelling and a quick whiteboard AFL. Two sets of questions built into the slides, RAG rated and with answers. Ends with an exam style question.