A complete, ready-to-teach PowerPoint lesson on binomial estimation for Pearson Edexcel International A Level Pure Mathematics 2 (WMA12). It covers using the first few terms of a binomial expansion to estimate values such as 0.98⁹, with why this works when x is small, approximations when higher powers can be ignored and percentage error.

What’s included (18 slides):

• Learning objectives, prior knowledge and key words
• 5-minute retrieval starter
• Explanation slide: Why the expansion gives a good estimate
• 4 worked examples, built up one step per click, each followed by a “You Do” question with a full worked solution
• Common mistakes slide
• Practice questions with answers
• Exam-style question (5 marks) with full mark scheme
• Exit ticket and “Can I…” checklist
• Speaker notes on every slide

Follows section 4.5 of the Pearson Edexcel IAL Pure Mathematics 2 textbook, with Exercise 4E and Chapter review 4 suggested for independent practice. All questions are original.

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