The Global Population
Task One - Predicting the Future 
How fast is the world's population increasing? What are the components of the increase?
Use the Countdown Timer at ClassTools.net to set a certain time (30 seconds should be about right) for everybody in the class to decide what the world's population will be at the end of the lesson. Record all the predictions - the closest to the answer at the end of the lesson should get a prize.
Task Two - Population Milestones 
Copy and complete the table below, except the two cells with '???' in.
Download and print the 'Global Population Graph Paper’. By hand, plot the data from the table below onto your graph paper and then use your graph to help you fill in the two boxes with '???' in.