I teach in a special school and am teaching quite a bit of maths - though maths is not my degree subject. Most of the teaching is mid to low GCSE which I can manage. I've done some revision and can comfortable hit an A* on the old GCSE papers but I'd like to further my own maths skills and am thinking of enrolling for an online AS maths course. Does anyone have any recommendations for online learning colleges in general and maths in particular? Also, any advice on which units to choose other than the core ones?