I'm organizing a free virtual math conference July 10-11 #virtualmath21. This is for math educators who are tired of paying expensive registration fees just to get in the door. Presenters will be accepted first come first serve in my DMs. Schedule: docs.google.com/spreadsheets…

a quick thread on what the @penn mathematics department is doing starting this fall to improve the student experience in calculus courses... 1/

Grading Composition of Functions assignment and they are AWESOME. I love these guys - such creativity! 😎 @GoMidlo

I've got my List in the journal for my student teacher. It's ready for him tomorrow now.

Two years ago, I was saying “do you have any questions?”. Last year I switched to “what questions do you have?” It made a difference. Today I tried “ask me two questions”. And they did! And those ?s led to more ?s. It amazes me that the littlest things have such a big impact!

Dear America. We have your president. If you do not send us $30,000,000, in unmarked bills, by 2000 hours BST on Friday, we will let him return to you.

Celebrating year 7 the right way... Cancun.

Year 7: ✅

Visualizations of trigonometric functions are often useful to catch their meaning, especially if animated. This is one made with @geogebra buff.ly/2jNvHNe

I once taught an 8 am college class. So many grandparents died that semester. I then moved my class to 3 pm. No more deaths. And that, my friends, is how I save lives.

AND ANOTHER NEW POST: Dividing fractions 2 #mathschat justmaths.co.uk/2018/04/22/d…

Today I mourn the death of all the kittens on this test #rip #stopcancellingterms #wedontknowfractionsinprecalc

So, I have been teaching pre-calculus material for 15 years and I just now thought, "Hmmm, what is the change of base method for exponentials and why do I not show that?". There seems to be a great discussion about bases there. #mtbos

Pre-calculus #siouxcentral students used the unit circle to create the sine and cosine function graphs. @RiedemannSarah

I teach the generation that will save us all. #MarchForOurLives #ArmMeWith #mtbos #iteachmath

Michelle and I are so inspired by all the young people who made today’s marches happen. Keep at it. You’re leading us forward. Nothing can stand in the way of millions of voices calling for change.

Marching on Saturday in DC... any sign ideas for teachers? #marchforourlives #mtbos #iteachmath #ArmMeWith