Differentiated Learning Objectives- All students should be able to construct a pie chart. - Most students should be able to construct and interpret a pie chart. - Some students should be able to compare a two pie charts by calculating frequencies. My experience as a Head of Mathematics going through the deep dive OFSTED inspection. How to use ratios and proportional reasoning as a model for finding the original amount after a percentage change. To find the area of compound shapes students need to understand what the word compound means.