What happens when you use larger or smaller measurement units? Join Mr. Waldorf for this lesson that encourages students to measure objects twice using two different sizes of length units and compare. Students will need a centimeter ruler, an inch ruler, and some small items to measure (unsharpened pencil, new crayon, pink eraser, etc.), as well as a whiteboard and marker or pencil and paper. If you have access to a printer, we suggest printing the Problem Set using the link below the video.