Bivariate Choropleth Map

Bivariate Choropleth Maps are in essence a regular choropleth map but with more than one variable. The map attached shows three variables land use, life expectancy, and gross nation product per capita. The map uses a variety of different colors to present the data. The key indicates these values. 

http://image24.webshots.com/25/3/32/3/286333203FPiEKt_fs.jpg 

Bilateral Graph

Bilateral Graphs come two variables with one of the variables being constant. In this map the constant is years. The other variables that differed are the unemployment rates and jobs. The main focus of this map incorporates more than one variable in order to give a broader prospective. 

http://ustreas.gov/press/releass/images/november%20jobs%20graph.jpg

Mental Maps

The map that I have attached can be descried as a persons personal account of a space. They have labeled and have drawn real world objects in what looks to be a city. However, you can tell that the author of this map has purposely left out and added landmarks. This can be confusing to some since streets are labeled but not every landmark present. It is indeed a mental map since it is unique in the sense that the authors original conception.