<p>Differentiated problem solving activity on the different averages.<br /> Three levels of difficultly Red, Amber and Green.<br /> Powerpoint with worksheets and answers.<br /> This is in line with the types of questions now asked at GCSE, but could easily be used with KS3. The students have to find the numbers that work given the values for certain averages.<br /> This is a good activity to consolidate understanding of the different averages.</p>