1) PLEASE tell me if this mapping already exists!

2) I am going to do this work over the Christmas break, and I'm happy to share it with Khan academy.  Is there any specific format or info I would need so that my work is easy for you to use?

I'm a UK maths teacher, with a Cambridge maths degree, 20+ years teaching experience, and I've been an A level examiner at OCR for 10+ years.  I have a friend who wants to teach himself A level maths so I have agreed to locate online teaching material for all items on our new A level specifications.  I am new to Khan, but I love what you're doing.  If the work I am doing for my friend can be useful to you, then just get in contact.

Mary