Students simply sign-in to their google account and go to https://mapsengine.google.com/map/. They then search a location and add a placemarker, a description of the event and a picture. They can also add shapes, lines, and rulers. I then had my students turn in their map by simply copying the link to Google Classroom. (Be sure students change the "share" settings to "anyone can have access with the link").
You can see a great video tutorial HERE.
See my Google Maps Activity for the Cold War HERE.
See my Google Maps Activity for the Battles of World War II HERE
Happy Teaching!