primes graphs digits sums of powers bases
combinatorics powers/polygonal Fibonacci
geometry repdigits algebra perfect/amicable
pandigital matrices divisors games/puzzles
Teachers, this is just a place for me to put things that I find interesting or important! As I get older, I need a place to put things so I can go back and remember what I did or what I need to do. You are certainly are welcome to visit any time!