4.18 Conditional Probability Higher GCSE PowerPoint Lesson

In this 25-slide lesson, students will explore conditional probability through real-life contexts involving drawing items from a set without replacement. The lesson builds on prior knowledge of basic probability and introduces how outcomes change when previous events affect subsequent ones. Students will learn to construct and interpret probability tree diagrams for dependent events and use these to calculate probabilities involving conditions such as “given that”. Emphasis will be placed on understanding how the total number of outcomes changes after each draw and how this affects probabilities.

Note this lesson is for the higher tier only.

The lesson includes:

• Clear, guided examples

• Discussion opportunities from Think, Pair, Share

• Mini whiteboard section to check understanding and clarify misconceptions

• Two structured tasks to practise key skills

• Challenge activity to extend and deepen learning

Perfect for engaging learners while reinforcing essential data and statistics concepts.