Dec 04 2011
This photo is a collection of histograms, or population pyramids, created by students in our class. The graphs have been specifically placed in different stages due to their respective locations because of their population characteristics. The majority of the countries in stage 2 are developing countries with very high birth rate and low death rates; [...]
Dec 01 2011
During our final APES class of No-Shave November–when beards and peach fuzz raged with a never-before-imagined fury–we discussed The Theory of Demographic Transition. In essence, the theory of demographic transition is a model that explains how a country’s birth rate, death rate, and population change as it transitions all the way from a preindustrial to [...]
Dec 01 2011
Demographic Terminology: CBR – “crude” birth rate. Based on number of births per 1,000 people. The higher the CBR rate is, the more babies are born per 1,000 people. CDR - “crude” death rate. Like the CBR, it is based on number of deaths per 1,000 people. The higher the CDR, the more deaths for every [...]
Nov 29 2011
While I’d usually be content to leave the scientific math to the physics nerds kids (Shhh, don’t tell them I said that), the study of demographics requires calculations in order to estimate and predict population size and growth. Therefore, here are the basic calculations needed for both our demographics unit and the AP exam. I’ll provide a picture, which [...]
Nov 21 2011
There are 1.8 million births, and .8 million deaths, which means there’s a net population of 1 million, EVERY FIVE days. If this estimate is drawn out further, we see that the world gains about 73 million people a year, so within the next 11-12 years we will have gained another billion people. Actually, just [...]
Oct 31 2011
Yes, most population experts agree as of today there are 7 billion humans alive on the planet today (Oct. 31st, 2011). Of course, people will die today also, but the births will outweigh deaths and keep our numbers above 7 billion. What most people don’t realize is how quickly we went from 1 to 7 [...]
