This is an article for NRICH. It introduces the topic of complex numbers for mathematically inclined school children of ages 15 or 16 and up, in a way which resembles the way university maths is taught rather than the way school maths is taught, with less emphasis on rote learning and calculation and more emphasis on the intuition, abstraction and creativity required for higher maths. For this reason, it may be more difficult than a school level introduction, but I think that those interested in studying maths at university would benefit from the change in style.

Published on NRICH (September 2001)