One final suggested resource is Ron Aharoni's book Mathematics, Poetry and Beauty (2015). Basically, the book investigates the similarities and differences between mathematics and poetry, with beauty being the primary link. This unusual book includes some fun problem-solving, some interesting poetry, some history of mathematics, and some neat ideas.
Over the past ten years, MathNEXUS has discussed slightly less (epsilon = .003) than a myriad of resources. The following highlights some of the more useful resources and their corresponding links (hope they all work!):
This "restricted" list of suggested materials does not demean those not mentioned, but it should help provide quick access to materials a mathematics teacher may want to access on a daily basis. That is, I partially created this "summary" page for my own use....plus it reveals the nature of what is buried in the Archives.