Explain to students that they will now be creating their own maps – of the classroom. Break students into groups of three to work on their maps, and provide them with large pieces of posterboard. Encourage students to sketch lightly with a pencil at first so that they can erase markings easily. Give each group at least one measuring device, such as a tape measure or a ruler.
First, have students measure the length and width of the room. Help students determine how large their map should be based on these dimensions, and which proportions they should use for creating their map’s scale. Make sure that each students understands why those proportions were chosen, and write the proportions on the board for easy reference.