Last year at Twitter Math Camp (TMC), participants were asked whether they paid their own way. Here was the show of hands:
We know that there are some fantastic math teachers out there for whom the cost of TMC is prohibitive. We would love to have you join the fun and learning!
So please purchase a copy, give them as gifts to your colleagues, and re-tweet, re-post, and share!
Online preview (intro, table of contents with titles only, index, glossary):
Direct purchase (more of the money goes to the scholarship if you buy from here):