Trundle wheels are a simplified version of a surveyor’s wheel. In this basic student edition of the trundle wheel, students roll their own version of trundle wheels across all sorts of things. They work especially well to measure curved surfaces or for applying a map’s scale of miles on highways.
A bonus to using trundle wheels in the classroom is that students must apply math skills to convert their measurements from the revolutions of the trundle wheel to yards, feet, inches, meters, centimeters, etc. They’re a fantastic way to work hands-on, applied math into the classroom.