When I was at Kidlitcon09, I was lucky enough to meet Sondy (or Sondra Eklund, if you prefer)of Sonderbooks. Besides enjoying talking books, we also talked math (and poetry). You see, I talked about Fibonacci poetry and Fibs on the same day that she was wearing her Prime Factorization Sweater. "What?" you ask, "is a Prime Factorization Sweater?" It's plain old cool is ...