Based on an old poster that used to be available in the UK, this is a printable classroom poster drawing attention to the fact that sometimes what USED to be counted as cheating actually isn't.
So working together, looking at the answer and trying to find out how they got the answer or using a calculator are not cheating.
But pretending you understand when you don't - that's when you are cheating yourself!
Feel free to download and print as many as you need.
(and if you know where the original is, please do let me know)