# Resources

## Pi Approximation Using Factors

In this set of activities students approximate Pi by rolling dice and spotting factors between pairs of numbers.

## Tetrahedron in a cube activity

Can you fit the tetrahedron in the cube? This nice little puzzle activity challenges 3D spatial awareness and thinking skills, as well as building nets and reinforcing knowledge of some simple polyhedra.

## Make a dodecahedron from A4 paper!

Did you know it's possible to build a dodecahedron using only 12 sheets of A4 paper?

## Hinged Dissection Activity

Thanks to the Wallace-Bolyai-Gerwien Theorem we know that any polygon can be dissected into pieces and rearranged to match any other polygon of the same area.

## Domino Computer worksheets

Computers work by adding binary numbers using circuits of "logic gates". Instead of an electrical circuit, it is possible to build these logic gates out of domino circuits. A huge network of dominoes is able to add numbers together in the same way a computer processor would, only much slower.

## 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.

## Fractal Activity Sheets

Fractals are fascinating mathematical objects, and learning about them involves looking at shape, ratio, scaling and geometry, as well as concepts like infinity.

## 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.

## Grime Dice - Lesson Resources

Grime Dice are an exciting variant of typical dice, with amazing properties, which allow pupils to generate a much deeper understanding of a range of probability topics.

## Building 3D Fractals

These Think Maths worksheets have all the instructions and printable nets required to build 3D fractals, both a Menger Sponge and a Sierpinski Tetrahedron.