O LEVEL MATHEMATICS · PROBABILITY
Learn how to describe chance, calculate probabilities and use organised methods such as sample spaces, tables and tree diagrams.
Start LearningMove from probability language and sample spaces to experiments, rules, outcome tables, tree diagrams, expected frequency and Venn diagrams.
Understand likelihood, events, outcomes and the probability scale.
Open Lesson →List all outcomes and calculate theoretical probabilities correctly.
Open Lesson →Use observed frequencies and reason about long-run behaviour.
Open Lesson →Use totals of one to calculate missing or opposite events.
Open Lesson →Organise combined events and count ordered outcomes systematically.
Open Lesson →Use addition rules without double-counting shared outcomes.
Open Lesson →Multiply probabilities when one event does not affect another.
Open Lesson →Multiply along routes and add the routes that meet the event.
Open Lesson →Update tree branches when selections change the available outcomes.
Open Lesson →Use probability to estimate event counts over repeated trials.
Open Lesson →Use set regions to calculate unions, intersections and complements.
Open Lesson →Combine single events, rules, tables, trees and applications independently.
Open Lesson →Complete an exam-style assessment across the complete final topic.
Open Lesson →