Need help writing a proof? Need to give your ‘kids’ some guidelines? Then check out:

Written by Eugenia Cheng, who is at the University of Chicago.

In it you will find:

1 What does a proof look like?

2 Why is writing a proof hard?

3 What sort of things do we try and prove?

4 The general shape of a proof

5 What doesn’t a proof look like?

6 Practicalities: how to think up a proof

7 Some more specific shapes of proofs

8 Proof by contradiction

9 Exercises: What is wrong with the following proofs”?

This is a very helpful resource and available freely on Eugenia’s website (at least for now…)