Subsets: Proper, Improper, and the Subsets Formula

**Content**: Finite and infinite sets; Subsets; Venn diagram (2 events); Probability **Subject Competences**: Forms subsets from finite sets; Derives the formula for finding the number of subsets; Applies the formula to find number of subsets; Determines the number of subsets **Suggested Activities**: Forming proper and improper subsets from a given set; Developing the formula for the number of subsets; Applying the formula for number of subsets **Background (verbatim)**: "Teachers should not give the learners the formula for calculating the number of subsets in a set. Instead they should help the learners to derive the formula on their own." **Guidance to the Teacher**: "Emphasise the process of deriving the formula of finding subsets including proper sets."