Math and Multimedia Carnival #21

Welcome to the 21st edition of the Math and Multimedia Carnival!  I hope you enjoy the selection of mathematics-related topics that have been included in the carnival this month, which have either been submitted via the blog carnival submission site, emailed to me, or are of my personal choosing.

Before we get to those though, as is tradition for the Math and Multimedia Carnival, let’s learn some trivia about the number 21! Read more…