A fun approach to collecting data using simple paper helicopters and cutting propellors to different lengths. Students are introduced to accurate measurement and there are options for pooling class results and investigating reliability. Then progress to graphing data using scatter graphs and possibly constructing a coversion graph relating the two variables. Ideal for the L5+ student and the disengaged mathematician or scientist!\n\nAs always the activities are an outline for you to enrich. Please leave comments and feedback to further improve this resource.