This flipchart contains a number of investigations and activities to introduce exponential growth and exponential functions. It could do with some jazzing up - some pictures, etc. If you make any improvements to it, please share them using the [Contact Us] link on the home page.

http://www.peterrussell.com/Odds/WorldClock.php
The World Clock website has continuously updated information about the world such as the world population, number of births, number of deaths, number of cars and the number of barrels of oil produced. It is a wonderful discussion starter for a number of maths topics including time series data and rates of change (gradient).

The World Clock is a one page flipchart that links to a website:
http://www.peterrussell.com/Odds/WorldClock.php

It continously updates information such as world population, births, deaths, number of cars produced, number of barrels of oil produced. A wonderful discussion starter for a number of maht topics including time series data and rates of change (regression).

This is an ActivBoard flipchart. Can you solve the case of the missing square? Hint: Use your knowledge of gradients to help you.

Click on the cyrstal ball to start. Follow the instructions.
Question 1: What is the secret? Hint: Record your answers and look for a pattern.
Question 2: How does it work? Hint: It uses ALGEBRA!