Math Mama Writes has a staggering collection of 51 articles from the blogosphere for the 51st edition of the Math Teachers at Play Blog Carnival. I particularly liked the opening trivia about 51.

*I’m a pentagonal number,*

*I have just two factors,*

*and if you put me in base 2, 4 or 16,*

*I’m a palindrome.*

*I wonder:*

*Is there anyone else like me in the number universe?*

On the other hand, the

**Math and Multimedia Carnival**is currently dormant and will resume next month. It will be hosted by Mathematics, Learning and Web 2.0. You may now submit your entries at the submission form.