A fun way of looking at displacement reactions using different sized weapons to represent each element. For example, magnesium is a chainsaw, and copper is a daisy. It includes some practise equations.

A PowerPoint that goes through the age old question of who is smarter - Boys or Girls? The PowerPoint walks the students through the steps of calculating the means, then the standard deviations, what standard deviation means, performing the T-Test and then finally interpreting the result using the critical value.