Exponential Growth and Decay

An introductory lesson on exponentials

Author: T³ United Kingdom


Tags Time series, Exponential, Fractions, Probability, Statistics, Geometry

This activity provides a full lesson plan with starter (simulating radio-active decay), main activity (compound interest) and plenary.

The learning objectives are:


  • Recognise graphs of exponential growth and decay;
  • Find the link between exponential growth and decay and a multiplier;
  • Know the general form and the properties of an exponential curve.


The pdf file provides teachers with detailed guidance on presenting the lesson assuming that students start with a new blank tns document, but an alternative method is to use the pre-formed tns file, Exponentials.

Publisher specific license