Dev Gualtieri's newly published Secret Codes & Number Games: Cryptographic Projects & Number Games for Children Ages 5-16 is a thoughtfully designed introduction to crypto for kids.
It builds from a potted history of secret messages to a series of simple substitution ciphers, DIY cipher-wheels, fun steganography examples (like encoding messages with flowers or cartoon pigs), to advanced subjects like keyed ciphers, the Polybius cipher, the Vigenère cipher, and some exciting work with vectors.
The $18 paperback isn't cheap (it's a Createspace publish on demand title, and they're pricier than mass-produced titles), but there's a real shortage of material like this, and the price won't break the bank. There are kids for whom this would be the perfect gift, and it would also make a great addition to library collections (especially school libraries). There's a preview here.
Secret Codes & Number Games: Cryptographic Projects & Number Games for Children Ages 5-16
Studio North was commissioned to refit an old elevator shaft in a converted warehouse loft in Calgary; they built a tall, narrow library with climbable shelves whose hand- and foot-holds retract into the shelving.
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The Raspberry Pi Foundation has done outstanding work packing a fully capable desktop computer into a package the size of a deck cards—especially one that only costs $35. But if you already have a working laptop, why should you care? Oh, how much you have to learn. Besides operating well as a compact digital media hub, […]
Custom coffee vessels are the perfect piece of office flair, but it’s just a matter of time before your VOTE FOR PEDRO mug will start to lose its relevant wit. Why not have a new one every day, with whatever silly nonsense you want sticking off the sides? You can save big on your novelty […]