If you’d like to share the joy of Möbius loops with your friends and family, then here’s a printable worksheet from my Think Maths website.
Think Maths Möbius worksheet (PDF)
No longer will you have to borrow a friend’s Möbius loop to colour in all six regions so that each one touches all five other colours. Print this one out, match up the arrows and you’ll have your very own.
6-colour Möbius Map (PDF)
Toy: Binary/ASCII converter
Sending messages in normal characters is so early-last-century. Since the deployment of ASCII in 1963 we have had a systematic way to convert standard sentences into a string of binary 1s and 0s. Use this gadget to convert normal letters and symbols into binary code. Ideal for emails, love letters and school projects. (Full version)
Toy: Spreadsheet converter
Upload any photo you want and download it as a fully formatted spreadsheet! (Full version)
I knew when I put a sudoku in my book people would want to solve it. I also knew people would not want to ruin their near-mint-condition copies of my book. So here it is for you to print out on any piece of paper you’re less emotionally attached to.