Pupils will have an increased knowledge of proportional reasoning, providing a way of approaching problems in a more pictorial form which will help them to solve problems in real world contexts and reason mathematically involving direct proportion. For use with KS3/KS4 pupils. Lesson PowerPoint includes; Worked examples using a concrete-pictorial-abstract progression to ensure pupils understand how to apply a grid method to solve proportion problems. Progress check following initial examples. Main task differentiated by A01/A02/A03 questions and Red/Amber/Green so that all pupils are encouraged to progress onto A03 questions. Answers to all examples and tasks. PRET style homework task with opportunities for literacy/research/memory/skill/stretch. Printable slides adapted to provide a writing frame for pupils where necessary. Lesson plan includes; Objectives/Outcomes. Details of engagement/hook/bigger picture. Details of differentiation and challenge. Teachers notes on how to deliver the lesson.