This lesson looks at plotting cumulative frequency curves from tables and using box plots (box and whisker diagrams) to analyse the data from these. Interquartile range is also included/ explored. This lesson aims to show learners how to draw and understand cumulative curves in a step-by-step way that is both visual and interactive, with questions and answers included. This also reduces the need for printing and makes good, printable revision notes. This resource will prove useful in any maths lesson. Learning aims are also included so students can measure their level of understanding and success in class. A lesson I have enjoyed teaching myself!