Holidays are a good time to find the answer to complex mathematical problems using household items, MacGyver-style. One way to find pi (yes, that pi) involves a flat surface, a little twig or pin, and ...

Happy Pi Day! Isn't Pi Day one of the best holidays all year? For last year's Pi Day, I determined a value of pi without even using a circle. How can you top that? I can top it by using pi to find pi.

It really isn’t necessary, but there is some geek cred to learning pi to some bizarre number of digits. One way to do that is via a piem — a mnemonic device that is easy to remember and gives you the ...