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Merry Christmas! Here’s our maths gift to you – a puzzle.

Have you ever got halfway through wrapping a present, and then run out of paper? Follow our foolproof method and discover the maths of gift wrapping!

Difficulty: Taxing I have a collection of strange dice.

We’re looking deep into essences and origins. From coffee to antimatter, can you puzzle out the solutions?

String is floppy, so it’s usually a terrible thing to build a tower from. But this tower uses tension and string to hold itself strong!

Difficulty: Tricky Janet is afraid of the dark, especially dark caves and tunnels. Today Janet must catch the train into town. But there’s a problem. As soon as the train leaves the station, it goes into a tunnel.

Have you ever wondered why many old paintings are so shiny? It’s not the paint they used – it’s a varnish that’s applied on top of the paint. These chemicals are designed to enhance and protect precious artworks. And CSIRO just formulated a new varnish that’s taking the art world by storm!

This quiz has a lot of comparisons. From cosmic circles to considerable cats, can you work out the biggest?

The year is beginning to wrap up, and the summer holidays are in sight. Now is the perfect time to brush up on your paper plane skills! We’ve collected a few quick and easy designs for you to try, from a looping master to a super-fast dart with a twist.

This paper plane flies quite a bit like a regular dart. But its striking looks make it much more fun. Plus, you get two pairs of wings – front and back – that you can modify!