Overview

This complete resource bundle supports teaching, learning and revision for the Discrete Random Variables chapter in Pearson Edexcel International A Level Mathematics - Statistics 1. It develops the key ideas of probability distributions, cumulative distribution functions, expected value, variance, standard deviation and linear transformations of random variables.

The bundle is designed to help students move from basic probability thinking into formal statistical modelling. Clear notes, worked examples, structured practice, challenge material and assessment-style tasks support both independent study and classroom consolidation.

Teacher-facing resources are included to make delivery straightforward, with lesson planning support, teaching notes, misconception guidance and a premium classroom presentation slide deck for whole-class instruction.

What’s Included

This bundle includes:

• Student Notes — clear chapter notes covering random variables, distributions, CDFs, expectation, variance and transformations.
• Worked Examples — fully worked step-by-step examples with method explanations and checks.
• Practice Questions — progressive questions for fluency, consolidation and homework.
• Challenge Questions — more demanding problems requiring multi-step reasoning and stronger modelling skills.
• Mini Assessment — a timed end-of-topic assessment with a balanced mix of skills.
• Mark Scheme — detailed answers with method guidance, mark allocation and common errors.
• Lesson Plan — a structured teaching sequence for introducing and developing the chapter.
• Teaching Notes — teacher guidance, questioning prompts, interventions, differentiation notes and plenary ideas.
• Presentation Slides — a premium classroom-ready slide deck for whole-class teaching, worked examples, guided practice, misconception checks, visual explanations and lesson delivery.