

This IB Math AI SL 4.5 – Introduction to Probability resource develops students’ understanding of how chance is defined, measured, and used for prediction. The lesson builds core concepts including trials, outcomes, sample space (U), and events (A), linking theoretical probability with experimental probability through relative frequency and long-run behaviour. Students learn to use complements to solve “at least one” problems and apply expected number reasoning to repeated experiments.
Structured tasks with coins, dice, cards, spinners, tree diagrams, and compound events help students organise outcomes systematically and model probability situations clearly. The resource also introduces fairness in games through expected value and encourages comparison between experimental and theoretical results in real contexts. With scaffolded practice, extended exam-style questions, and a full answer key, this material supports SL classroom teaching and independent study in line with IB Mathematics AI expectations.
Get this resource as part of a bundle and save up to 30%
A bundle is a package of resources grouped together to teach a particular topic, or a series of lessons, in one place.
Something went wrong, please try again later.
This resource hasn't been reviewed yet
To ensure quality for our reviews, only customers who have purchased this resource can review it
Report this resourceto let us know if it violates our terms and conditions.
Our customer service team will review your report and will be in touch.