IAL Statistics 1 Probability lesson slides

7 complete lesson PowerPoints for Edexcel IAL Statistics 1 Chapter 4 (Probability), 129 slides with worked examples and full answers.

A complete set of 7 lessons covering Chapter 4 of the Pearson Edexcel International A Level Statistics 1 course (sections 4.1 to 4.8). Everything is written to be taught straight from the deck — no preparation needed beyond opening the file.

Lessons in this deck

Vocabulary and Venn diagrams
Exclusive and independent events
Set notation
Conditional probability
Probability formulae
Tree diagrams
Multi-step problems

What’s in every lesson (60 minutes)

Do now — a four-question retrieval starter, with answers on the following slide
Learning objectives — tied to the numbered textbook sections
Worked examples with Your turn — a model solution beside a matching question for students, with mark schemes shown
An exam-style check before moving on
Fluency, reasoning and problem solving practice
An exam-style question modelled on real WST01 papers
Full answers throughout

How to use it

Teach straight from it, or pull single lessons as cover work or intervention. The deck follows the Pearson textbook section by section, so it drops into an existing scheme of work without resequencing. Set notation gets its own lesson, because WST01 examines the notation itself and not only the diagram.

What’s included

One PowerPoint (.pptx) containing all 7 lessons, 129 slides
Editable throughout — change the numbers, cut slides, reorder lessons

Specification

Written for Edexcel International A Level Mathematics, Statistics 1 (WST01), Chapter 4. Much of the content also covers Edexcel A Level Mathematics 9MA0 statistics and legacy S1. Free to download and use.