Alastair stared in horror. His hopes of winning the world championship were over. His conker had fallen apart after just one hit. Cheating, he thought, must be involved!

He was playing against 82-year-old David Jakins in Sunday's final. Afterwards he was found to have a fake conker in his pocket, made of steelA strong metal that is made up of a mixture of iron and carbon. and painted brown.

Cheating is as old as humanRelating to people or their characteristics. history. A Greek drinking cup from around 490BC carries a picture of a wrestler trying to bite his opponent.

At the 1904 Olympics the winner of the marathon, Fred Lorz, was disqualifiedStopped from taking part in a competition or exam due to breaking the rules. when it emerged that he travelled in a car.

Today, plagiarismCopying someone else's work and pretending it is your own. (or copying someone else's work) and the use of AIA computer programme that has been designed to think.  are some of the biggest worries for teachers around the world. This week, Kamala Harris, who is running to be America's next leader, was accused of copying passages in her book from Wikipedia.

Do we all cheat a little bit?

Yes! We all cheat every day - such as when we copy someone's clever joke or ask a friend to look at their homework. We do so because we are worried we are not good enough by ourselves.

No! Just as cheating in exams is wrong, so is cheating in everyday life. There are plenty of people who do all their own work and never give in to temptationWhen you find it hard to resist something. .

Steel - A strong metal that is made up of a mixture of iron and carbon.

Human - Relating to people or their characteristics.

Disqualified - Stopped from taking part in a competition or exam due to breaking the rules.

Plagiarism - Copying someone else's work and pretending it is your own.

AI - A computer programme that has been designed to think. 

Temptation - When you find it hard to resist something.