Learning from your pre-test

I have marked all the pre-tests. You are welcome to come by my office and pick up your marked script.

A few things you should do for future exams, if you don't want to lose marks:

• Keep track of physical units at each stage of a calculation involving numerical values.
• Make sure the axes of a graph are clearly labelled and have a scale. 
• If you don't know the answer, don't waffle on as if you do.