Apparently, applying a tiny electrical current to the brain could make you better at learning maths. It sounds a bit scary to me.
So, if the idea of jolting children to solve their maths problems doesn't really appeal, why not think about becoming a numbers volunteer?
Number Partners is a volunteering programme designed to support young people across the country with their number skills. Volunteers from the business world visit primary or secondary schools to play number games with students, making maths fun and boosting students' confidence.
You don't need to be mathematical genius, but do need an interest in young people and numbers, and able to offer up to one hour a week or fortnight at a school.
Sign up now - it's as easy as 1,2, 3.