When learning about the different ways teachers can show data to their students I was automatically interested in Map Junction as it showed prominent East Coast cities progressing throughout history.
For example: image one is Boston with the left side being a map from 1776 and the right side being from 2016. In my current unit, where I am teaching the American Revolution this would be an interesting image to show students as they can see how different cities looked 250 years ago.
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the next image is from Boston (1798 vs 2016) again this shows the students the difference 20 years can make to a city and how a key city in the up and coming New America looked.
All in all, this is an awesome tool that could be used to spark great discussion in any history classroom.