PDS APES 5th Period 2009-10

*Note: This is a guest blog by Syd L. in 8th period. Today, we learned about Demographic Transition. It is best illustrated by a graph displaying the CDR (Crude Death Rate), CBR (Crude Birth Rate), and Population size. The model that we use has four stages: The first stage is the pre industrial stage–generally tribal [...]

If you enjoyed the TEDTalk by Hans Rosling, I wanted give a chance to learn more about his work. First, here is today’s video if you want to watch it again: Second, if any of you are interested in more about the stats in the presentation go to Dr. Rosling’s web site: http://www.gapminder.org/ Explore the [...]