Monthly Archives: December 2009

BBC News – Secret mobile phone codes cracked

BBC News – Secret mobile phone codes cracked: “A German computer scientist has published details of the secret code used to protect the conversations of more than 4bn mobile phone users. Karsten Nohl, working with other experts, has spent the…

More fun with Maths

Say to your friend, “Pick two numbers, both of them less than 10.” Then say, “Choose either one of those numbers and multiply it by 5.” Then, “Add 7.” Then, “Multiply the result by 2.” Then, “Add that number to…

Camel problem

An Arabic man is riding a camel across a desert expanse, when he encounters a novel sight. Three young Arabic men are fiercely arguing, surrounded by 17 camels. Dismounting, the stranger was told the problem. Their father had died, leaving…

Raffi Sheet Music

I have been looking for Raffi sheet music to play along. One option is the book. However I have just found lots of his sheet music on his site. Have fun, in case you were looking for this too.