What is the present growth of world population?
For maximum initial impact display the population clock. It shows the population of the world and the US. Both population totals grow in real time before the students’ eyes. The presenter can ask them to make a careful note of the world population totals at the beginning and end of the assembly. Remind them that it took 100,000 years until 1800 for the world’s population to reach one billion. Now it is well over six billion. The population explosion Thirty-two students take part in a prepared role play to explain how population doubles itself in half the time of the last expansion. A space is made at the front of the room and the 32 students are ready to participate. A line of 32 chairs is used to represent the total seats in a classroom, ie the point where the classroom is FULL. The presenter asks the audience: “We start with one student. The number of students doubles every 10 seconds and it takes 50 seconds to half fill the classroom – how much longer will it take to fill the classr
