2. What do you think the global
population will be by the end of the
lesson?
Population Clock
3. How has population grown over
time?
Draw a graph to show how you think population has
changed on the mini-white board
Globalpopulation(billions)
Year
4. Did it look like either of these?
• Stick in the graph and describe what it shows
5. Key terms – p170
Birth rate
Death rate
Natural change
Natural increase
Natural decrease
Life expectancy
Zero growth
Exponential growth
6. Calculating natural change
Difference between BR and DR as a %:
As BR and DR are a per 1000 the difference is
divided by 10 to get a per 100 i.e. %
Use the example on p.171 to guide you and
have a go at q.2 using table E p.172
8. The Demographic Transition
Model (DTM)
• This model explains birth and death rate
patterns across the world and through time.
• It shows links between demographic and
economic changes
9.
10. Use the cards and information on
p.173 -174 to complete your table of
characteristics for each stage
11. What limitations do you think
there could be with the model?
1. It does not include the influences of
migration
2. It assumes that all countries will go
through the same pattern
3. There is no time scale
4. Reasons for birth rates and death rates are
very different in different countries
