5.3.1.1 Understand that some outcomes are equally likely, and some are not

5.3.1.2 Understand that the likelihood of events happening can be ordered on a scale from impossible to certain

5.3.1.3* Understand that the likelihood of outcomes can be determined by designing and carrying out a probability experiment

5.3.2.1 Systematically find all the possible outcomes for two events using a range of appropriate diagrams

5.3.2.2 Systematically identify all possible outcomes for more than two events using appropriate diagrams, e.g. lists

5.3.2.3 Find theoretical probabilities from sets of outcomes organised in a systematic way from a range of appropriate representations

5.3.3.1* Understand that probability is a measure of the likelihood of an event happening and that it can be assigned a numerical value 

5.3.3.2 Calculate and use theoretical probabilities for single events

5.3.3.3 Understand that the probabilities of all possible outcomes sum to one

5.3.3.4 Calculate and use theoretical probabilities for combined events using a variety of appropriate representations, including Venn diagrams