Maps are educational, informative, and fun. Here's a collection of great links to cool maps. Enjoy!
Changing bases is fundamental to computer science because bits are binary. For example, programmer who work close to the CPU level would work with numbers and code in octal (base 8) or hexadecimal (base 16) becasue those bases work well with binary (base 2)
A in base 12 would mean the same value as 10 in base 10. B in base 12 would mean the same thing as 11 in base 10. and 10 in base 12 means you have one complete set of 12 so you move over tot he next digit place and put a 1 there making it 10 base 12.