2026 8 Maths Unit 4.1 Probability Lessons The following lesson materials are directly relevant to the unit… Probability 164. Introduction to Probability 165. Two-Step Probability Experiments Representing Multiple Events in Probability 166. Tree Diagrams for Multi-Step Probability 167. Two-Way Tables and Venn Diagrams Simulating Experiments 168r. Reviewing Experimental Probability and Simulation