## Archive for February 21st, 2009

### Students as Facebook friends?

Posted by: **Dave Richeson** on February 21, 2009

A blog about math, puzzles, teaching, and academic technology

Posted by: **Dave Richeson** on February 21, 2009

Euler's Gem: The polyhedron formula and the birth of topology

Princeton University Press

2008

Euler's Gem Facebook page

Buy it:

Princeton University Press

Amazon

Princeton University Press

2008

Euler's Gem Facebook page

Buy it:

Princeton University Press

Amazon

- RT @Sci_Phile: I've never seen a cooler demonstration of inertia i.imgur.com/3r47N4J.gifv https://t.co/TxOqExbYDW 12 hours ago
- Nice! twitter.com/numberphile/st… 2 days ago
- PJ Harvey is touring the US. Yay! Hope to see her in Philly in April. bit.ly/2gClzUu 2 days ago
- RT @nattyover: First thing I ever got paid to write was a review of this Klein bottle for Make Magazine in '09. Been writing pretty weird s… 3 days ago
- RT @extremefriday: Weirdest thing about Westworld: if I were a coder working in an underground lair I would def not wear a tie to work ever… 3 days ago

- How to curve an exam and assign grades
- What is the difference between a theorem, a lemma, and a corollary?
- Music is math: ten songs about mathematics
- Playing the probabilities in Settlers of Catan
- LaTeX now available in Google Docs
- Is or an inclusive or or an exclusive or?
- Showing two expressions are equal: stop the madness
- Tom Lehrer's math songs
- The transcendence of e
- E-Z Pass, speeding tickets, and the mean value theorem