The carny’s getting set up in this comment thread.
Carnival of Mathematics #52.Planar Curves at Numericana.Sumidiot on Wolfram Alpha and calculus reform.
The 51st Carnival of Mathematics (at squareCircleZ).
“Where is math 2.0?” by MariaD. Hey look. It’s my old sparring partner Kirby (Bizmo Diaries) Urner.
So Jonathan sez the Carny’s still with us; I guessed wrong. There’s a new Math Teachers at Play.
But wait: here’s Lefty versus MPG (and a followup). Also JD on MPG a couple weeks back. Abandon ye all hope.