OCR A-level Maths: The Binomial Expansion (Pure Year 1) – Complete Lesson Pack

A complete, ready-to-teach OCR A-level Maths (H240) lesson on the binomial expansion, for Pure Year 1. Students build expansions from Pascal’s triangle and from factorials, expand (a + bx)ⁿ, find single terms and coefficients, solve for unknowns and use expansions to estimate. Built for teachers and tutors who want fully modelled lessons without hours of preparation. Covers OCR specification 1.04a.
Topics covered:
• Use Pascal’s triangle to expand (a + b)ⁿ
• Use factorials and nCr to find binomial coefficients
• Expand (a + bx)ⁿ for a positive whole number n
• Find a given term or coefficient, find unknowns, and estimate using an expansion
What’s included: annotated PowerPoint with click-by-click I do / We do modelling and speaker notes (plus a PDF); Bronze, Silver and Gold exam-style worksheet with full worked answers; two A5 student help cards; a two-page teacher guide with OCR spec links, timings and misconceptions; double-sided homework (20 questions, 49 marks: AO1 24, AO2 12, AO3 13) with a separate answer copy; printable exit tickets.