ALevel Ken Ward’s pages robert October 5, 2015 No Comments I stumbled across this one whilst looking for a nice proof of the sum of the first n natural squared numbers. Ken’s take on this is here and his general maths page with lots of gems of interest to budding A Level mathematiciams is here. ← Massachussets Institute of Technology OpenCourseWare Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website