A complete, ready-to-teach PowerPoint lesson on mathematical proof for Pearson Edexcel International A Level Pure Mathematics 2 (WMA12).

Students learn what makes a proof: start from known facts, write general numbers algebraically and finish with a clear conclusion. The lesson covers proof by deduction, proving identities by working from one side to the other, proving geometric results using gradients with a sketch, and using the discriminant and completing the square in proofs.

What’s included (20 slides):

Learning objectives, prior knowledge and key words
5-minute retrieval starter with answers
Explanation slide: what makes a proof, and how to set out an identity
5 worked examples, built up one step per click, each followed by a “You Do” question with a full worked solution
Common mistakes slide
8 practice questions with answers
Exam-style question (7 marks) with full mark scheme
Exit ticket and “Can I…” checklist
Speaker notes on every slide

Follows section 1.5 of the Pearson Edexcel IAL Pure Mathematics 2 textbook, with Exercise 1E suggested for independent practice. All questions are original.

For video lessons, find Mr Edine Maths on YouTube (@mredinemaths).