Evolution: Natural Selection II
Discover natural selection in real-life. 
Evolution: Mutation
Understanding the mechanism (mutation) of evolution
Weight and Mass
This problem set is designed to help students understand the concepts of weight and mass, and to distinguish between the two.
Monty Hall Problem in a Clicker Classroom
When I introduce electronic response systems (clickers) to teachers I often use my favourite problem: The Monty Hall Problem. This is a famous problem on probability that is easy to explain, yet its solution appears to be counter-intuitive (at a first glance). If you have never heard of this problem, watch the beginning of the […]