Students are presented with a conventional snakes and ladder board with squares from one to a hundred, except that the board contains no snakes and no ladders. Instead, certain squares contain a column vector. Students who land on these squares move their counter according to the vector.

This resource uses the context of sports people staying healthy for as many days as possible, to look at various pathogens, how they can spread, and how their spread can be reduced.  The concept of 'zero days'  is used to explain why it is important that professional sports people do not become ill, so they can...