|This satellite image was captured by DigitalGlobe's GeoEye-1 satellite
on Oct. 6, 2014. Image from the National Portrait Gallery's website.
I pulled up a map of the National Mall on Google Maps to give us some context of the area. After a little discussion, we decided that we should figure out the length of another feature in the picture. We chose the road to the west of the DC War Memorial. Although the road had a small curve around the memorial, it was the easiest to clearly identify in the picture and on the map. The road measured 400 feet long. Students used that measurement to come up with a scale for the map and estimate the square footage of "Out of Many, One." If I were to do this project again, I would find measurements for other landmarks, such as the width of the reflecting pool, to see if we come up with similar estimates when basing our scale on other known distances.
|Image from Google Maps
You can see my students' final project in part three.