Choropleth maps are another one that use colors or shades to show proportions in information. My example shows the proportion of males per 100 females in the United States according to the 2000 Census.
Dot distribution maps are most commonly used to show population, like in the example I used which shows the 2000 population of the US. The maps use dots to show information. When trying to show population, the more dots in the area, the more people that live there.
Here is an example of a propaganda map that is comparing infant mortality rates. A propaganda maps are directed at a specific audience and are designed to influence them to think a certain way. The information they give in the maps may or may not be true.
A thermatic map shows geographic patterns by using statistical data, such as income or like in my example population. The maps also use a color coded key. My example shows the population changes in the United states from 1990- 1996. http://www.sou.edu/Geography/JONES/GEOG280/stpop96.GIF