Essentially, History Extension is split into two parts:
1. What is History?
In this part, you will first learn about various historians who have existed over the course of time and you will be able to select which ones you discuss in your examination. You will also learn about a particular area of study in history, such as how historians have perceived John F. Kennedy. Once again, you will be able to select which historians you select, as well as two debates relevant to said particular area of study. For example, in terms of John F. Kennedy, you can discuss the Cuban Missile Crisis and the Indochina War.
2. History Project
In this part, you will choose your own area of study in history that interests you, whether it is a personality or an event. You will virtually be able to do anything you like and you will have many months in order to complete a 2500-word essay. In doing so, you will indicate your progress in a logbook, where you note down each week or so what you have found about your area of study. This helps you keep on task with the historians and sources you use to discuss your area of study. I know this might sound a little heavy right now, but you are really guided through the process with the help of your teachers and they will even mark many drafts of the essay for you!
Just remember, as the individual above me has said, History Extension is more about how personalities or events have been perceived rather than what actually occurred.