Get To Know Dave Richeson

Sol Lederman has redeemed himself from his previous WildAboutMath podcast ;-)) and now has an hour up with math professor Dave Richeson, proprietor of "Division By Zero" blog and author of the popular volume "Euler's Gem." Sol and Dave talk about many interests (topology, Euler, inquiry-based learning, geometry, Gauss, Dave's new book, and more):

http://wildaboutmath.com/2013/02/08/dave-richeson-%E2%80%93-inspired-by-math-20/

And for an added Saturday bonus, here's a nice little recent geometry puzzle from Mind Your Decisions blog, with a surprisingly simple solution:

http://mindyourdecisions.com/blog/2013/01/28/monday-puzzle-triangle-ratios/