Sadly, the Guardian sells next to nothing despite it being by far the best newspaper.

Yes I agree with that. The thing is, ever time I made things more accurate I later realise I've made it too involved.

However, it *is* visually convincing and it does explain it, and so I thought it would make quite a good introduction.

Do feel free to get in contact with me about any ideas though. I know it isn't perfect, or anywhere near, and there is always a good reason to improve it.

As for the other comment, opps I'll fix that.

Oh and also this book is great:

http://www.amazon.com/Euler-Master-Dolciani-Mathematical-Expositions/dp/0883853280

You don't need much knowledge (A-Level knowledge in the UK) but there are so many wonderful results proved in it!

I wrote this:
http://people.pwf.cam.ac.uk/jlnw3/maths/books/prime/

It was meant as an introduction to the idea of proof. Perhaps you might like it.

Real maths nerds don't use calculators because there is no need for them.

Engineering students might well need one though.