Proportions, interpreting scales, reading maps, measurement... this lesson covers lots of great concepts in a motivating and fun way.
"How far is it from your school to other local cities? Do you have a guess? Record it in the table provided, then let's get measuring! See the scale on your map? That tells us how distances on the map relate to "real" distances. Measure from the center of each city's dot to the center of the dot representing your school's city. Now, use these measurements