Percentage and proportion N4.1 Extension Starter Preamble This short brainstorming activity is to confront pupils with the existence and meaning of percentages greater than 100%. Quickly collect in answers from pupils, then sift through them with the whole class. Guide the group to realise that looking at percentages as fractions helps in so far as, for example, 150% = 150/100 or one and a half. Return to the 100% off (if felt appropriate) and establish that, in terms of sale prices, it does make sense (something is being given away free). Round the session off by asking quickfire questions such as ‘write 175% as a fraction or mixed number’. This provides an opportunity to revisit some earlier fraction work. Possible content Fraction/percentage equivalences. Resources None. Solution/Notes Not applicable.