Today I gave my son a piece of paper with this cryptic message: 00001100.

“This is you”, I told him – “and this is your sister”: 00001111.

“If you can work this out, I'll pay for your v-bucks!”

I gave him a single hint. The word “binary”.

Unfortunately, it only took him 5 minutes to Google the answers: 12 and 15.

Nevertheless, I made the pen below, and we had a talk about what binary numbers are – and how computers work:

If you have kids, let them click on the circles until the sum equals their age (or their parents age!), and if they're curious – well, then you have an excuse to talk about programming and stuff 😁

Thanks for reading, and Happy Easter!