Using Google Earth as a constructivist approach

Solving prop0rtions is not just about solving for x, its about finding a relationship and using math to find out the number that makes the relationship true. As teachers, we need to present situations to students that allow them to compare them and find relationships so students understand proportional reasoning. This google earth activity is exactly what we need to be doing! Not only did the students meet the math standards, they were also meeting the process standards defined by NCTM. I am definitely going to use this activity in my MS classes.