Math & Movement
Ask a student to identify an object in the room and, without actually getting the object, ask them which unit they would use to measure the chosen item. To check, they can then get the item (if reasonable) and place it on the mat to see if they made a good choice. For example, a student chooses a poster as the object and to measure it in feet. They will get the poster and lay it on the mat and see if feet is a reasonable way to measure the poster.
Activity Extension: Extend this activity to items that are not in the classroom but that students are very familiar with. Have them choose a unit of measurement appropriate for the item using the mat as a guide. For example, their bed, a car, etc.