IB Maths binomial distribution lesson

The binomial distribution, its mean and variance, and the phrasing that decides which bars you shade: exactly, at most, fewer than, at least, more than. “At least one” by the complement. Written for IB Diploma Topic 4, common to AA and AI.

What is in the PDF

• The student lesson: a warm-up, a worked example, a bar chart that shades the bars each phrasing covers, GDC steps for TI-Nspire and Casio, and an original exam-style question with steps leading up to it.
• The teacher page: full answers, what each common wrong answer tells you about a student’s thinking, and questions at three levels for the board.

Use it live with a class, free and with no login, with every answer checked and the reason given when it is wrong:
https://ksmaths.com/topic-4/binomial/

This is one of 97 free sample lessons from ksmaths.com, a course of 423 interactive lessons from MYP Year 7 to the IB Diploma (AA and AI, SL and HL). The full course starts at $59. Teacher pages are $49 a teacher for twelve months, and a school licence is $349: https://ksmaths.com/schools/

Written by Keith Spencer, Head of Mathematics, thirty years teaching IB, US and UK curricula. Original material, not produced or endorsed by the IB.