advent calendar 2015

Play a game to while away those last 24 hours before Christmas.

Fold and cut a fantastic fractal Christmas tree!

Think of a number, square it and subtract your starting number. Is there something special about the number you are left with?

Read about the amazing mathematical journey that led to a strange object with a will of its own.

Complete the squares to win the game.

Find out about the theory and Einstein's struggle to formulate it.

Explore the beautiful symmetry of snowflakes and create your own paper versions.