Parametric Heart Spreadsheet

Do you ever wish your spreadsheets were more romantic? Using parametric equations, you can construct a perfect heart shape, and this Excel file has everything you need to understand how the equations give the shape, as well as allowing you to edit the parameters and see how that changes the resulting plot.

Mile of π

Does your wall need more digits? We've created a printable version of everyone's favourite circle constant, which you can use to decorate walls, floor and ceiling with up to a mile (1.6km) of transcendental goodness.