成人快手

Do we really still need to know how to add up? Do our children really need to learn addition, subtraction, multiplication and division? Especially now that we have calculators and computers to help us?
No, says Conrad Wolfram, a British techology entrepreneur who's passionate about changing the way we teach maths.
Marcus du Sautoy, Professor of Maths at Oxford University, thinks it's still important.

(Photo: Maths lesson in Maseru, Lesotho. Credit: Chris Jackson/Getty Images)