Conjecturing and generalising

An account of some magic squares and their properties and and how to construct them for yourself.

An article which gives an account of some properties of magic squares.

You can differentiate and integrate n times but what if n is not a whole number? This generalisation of calculus was introduced and discussed on askNRICH by some school students.

Here explore some ideas of how the definitions and methods of calculus change if you integrate or differentiate n times when n is not a whole number.

Fractional calculus is a generalisation of ordinary calculus where you can differentiate n times when n is not a whole number.