They give you a two whiteboards, a pen, an eraser, and (recently) the calculator program on the computer. Most of it is simple math - conversions, trigonometric functions, simplification, algebra. I don't remember it being very difficult. Maybe I got lucky though? Just make sure you're calm as you take it. It's the last test and you're bound to be stressed out. That's probably the single biggest reason people tend to do worst on that section.