Deborah Costello

Assistant Dean of Faculty and Math Teacher. College Board Consultant, student of photography, lifetime liberal. she/her/hers

[Deborah Costello @costelloland]

@saravdwerf I would read "Infinite Powers," not so much to change your practice, but just to remind you that mathematics and specifically calculus is beautiful and rich and makes you think great things.

[Deborah Costello @costelloland]

7 days until the #APCalc exam... how you doin?

[Deborah Costello @costelloland]

It's my #Twitterversary! I have been on Twitter for 14 years, since 7 Apr 2009 (via @twi_age).

[Deborah Costello @costelloland]

This is an INCREDIBLE opportunity for teachers and schools! https://t.co/leX0DfcwaU

[Deborah Costello @costelloland]

It's my #Twitterversary! I have been on Twitter for 13 years, since 7 Apr 2009 (via @twi_age).

[Deborah Costello @costelloland]

Deerfield Academy is hiring a math teacher for the 2022-2023 school year. If you or someone you know is interested in working at a boarding school, you can find more information here. #mathteaching #matheducation #math #mathteacher https://t.co/ljiHjIS8wZ

[Deborah Costello @costelloland]

Shared this piece from The Atlantic on improving classroom culture with my department. Would love to hear more ideas on improving classroom culture. https://t.co/iqZFuF4Imb

[Deborah Costello @costelloland]

This worked fantastically well! 100 Numbers to Get Students Talking: https://t.co/vq47Dozmve via @saravdwerf #math #matheducation #calculus #apcalculus

[Deborah Costello @costelloland]

@RandomAthletess #Hawt

[Deborah Costello @costelloland]

This dude was awesome back in the day...

[College Football 24/7 @CFB247]

Rory Costello
Holy Cross, Offensive Guard 2015-2019

[Deborah Costello @costelloland]

@mathmodeling Congratulations, friend!

[Deborah Costello @costelloland]

This… smart!

[Cult of Pedagogy @cultofpedagogy]

"As I experimented with how I responded to their achievements, I discovered four simple strategies."
@Tarn_Wilson via @edutopia
https://t.co/9dj33RjwMA

[Deborah Costello @costelloland]

I cannot even imagine how they could make this ruling. Absurd.

[Natalie Morris @Nmozz]

NEW: Swimming hats for Afro hair have been barred from the Olympics as official body says elite athletes 'never used, neither require to use, caps of such size'

https://t.co/HotAFIhPXJ

[Deborah Costello @costelloland]

@_adverbia @soulcapofficial This is absurd.

[Deborah Costello @costelloland]

If you teach #APCalculus, this series of blog posts is going to be super helpful! Check it out! https://t.co/xYNTeP68Rj

[Deborah Costello @costelloland]

@_adverbia right there with you...

[Deborah Costello @costelloland]

I'm bad at twitter these days. It has fallen to about #50 on my daily task list and thus I rarely get here. But know I appreciate your thoughts...

[Deborah Costello @costelloland]

If you teach AP, you can do an online APSI this summer from your home. I'll be teaching calculus, but there are lots more. Check it out!
#APCalc #APSI #APSIUCF #CollegeBoard

[Deborah Costello @costelloland]

#betterplanet

[Deborah Costello @costelloland]

Want to hang out online and talk about AP Calculus? Check out this online #APSI June 28-July 1. All the cool #math teachers will be there! https://t.co/9FTfCccPb6
#APCalculus #APCalc #UCF #mathed