HOW MANY PEOPLE ARE THERE?

Taking into consideration the data of the previous presentation, make a bar graph representing the evolution of the worldwide population since 10.000 bC until today.

(If you don't know how to make a bar graph, see section TECHNIQUES).

Population density is the existing relation between a given area (usually squares kilometres) and the number of people living there.

• Do you think there is a link between the population density of a country and the wealth/poverty of its inhabitants?

• Calculate the population density of the following countries:

How can you calculate the density per square kilometre? A clue: if there are 12 people in 6 km, in one km. there will be...

• Show the results in a bar graph.

• Let's repeat the question: Is there a direct link between population density and wealth?