The worksheets on this site are created in PDF format. To view and print PDF files, you need the free Acrobat Reader. If you don’t have it, you can get it here. This website is currently in the late stages of its development, a state referred to as beta. As with all beta software, it has some quirks and many parts are not yet available. We are working hard to finalize the system’s structure, and roughly once every two weeks we roll out new functionality towards this goal. Until then you may notice that some resources move or even disappear for a while. The Mercator projection was created by Gerardus Mercator with the goal of representing directions perfectly for ship navigation. As a side effect of this, the high and low latitudes are highly distorted. Greenland, in particular, is so large on this map that it causes some students to think it is one of the continents. Source.