Paul Lockhart (of Lockhart's Lament https://www.maa.org/external_archive/devlin/LockhartsLament.pdf …) wrote a book and it's great!pic.twitter.com/bAL2BgIHi9
2:07 PM - 28 Mar 2015
0 replies
2 retweets
10 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.