"Every Monday morning, we will post a new map on this site. The maps will be unlabeled, uncaptioned thematic maps with no scales or legends. The maps we post will be of five types: choropleths, cartograms, dot maps, proportional symbol maps, and isoline maps.For each week’s map, your job is simple: figure out what data is being presented by the map. To solve the map, you have to find the clues on it and come up with an explanation that ties them all together. Your answer should be specific and precise.You may wish to print out each week’s map and hang it in the hallway for students to ponder as the week goes on. For younger grades, they might also make good challenge problems for students who have finished their in-class work. However you use these maps, the most important things are to give students time to explore the maps and the opportunity to collaborate with their peers. These maps are not intended to be solved quickly, but rather to reward those students who really dig into them!"