Professor at Butler University. Opinions are my own.

Joined December 2011
1,364 Photos and videos
Pinned Tweet
Thank you @KeepINLearning for making the videos @cfless and I made for @inquirelearn/@EducateIN even more accessible! Check this site for more than 50 videos all about the teaching and learning of K-8 mathematics! partnershipforinquirylearnin…

2
15
Ryan Flessner retweeted
30 Jun 2025
#BTCC25 is getting started with some energy!!! Thanks to our Emcees @ryanflessner @CFless Let’s go!!!
2
5
192
I’m making Twitter my X. Let’s meet up where all the fun is heading. Find me @ryanflessner.bsky.social
3
243
Ryan Flessner retweeted
I’m very excited to announce my commitment to Dominican University! Thank you to all my family, teammates, and coaches who helped me along the way. Go stars! @NCHSBaseball7 @IndyTitans
2
8
49
3,584
Ryan Flessner retweeted
The @butleru College of Education is hiring for several faculty positions. Please share to your networks! For more information and to apply, please visit: bit.ly/COE-faculty
1
3
328
Ryan Flessner retweeted
Interested in shaping the future of mathematics in Indiana education? Want a flexible work schedule? Check out the Senior Math Specialist and Secondary Math Specialist positions open now at IDOE! workforindiana.in.gov/job/In…
1
2
6
320
The fact that she’ll put these on AND have her pic taken could mean: 1) She missed @cfless & me desperately while we were @ #NCSM24 & #NCTMCHI24. 2) She actually loves math as much as we do. 3) She’s an amazing kid who will cheese it up with her dad. 4) All of the above.
1
4
34
1,312
Ryan Flessner retweeted
When…. WHEN will we stop labeling other ppls babies?! We would NEVER call our own kids “low kids” or “iep kids.” It seems small, but LANGUAGE matters. It impacts how we show up for kids.
4
20
79
5,152
I mean, this pretty much sums up my experiences at #NCSM24 and #NCTMCHI24 this week. Taking a pic with @jennalaib and @Sneffleupagus photobombs. I absolutely love this community of thinkers, Mathers, and friends.
2
31
1,190
I guess @NCTM liked it, too. 🤣 Thanks, @iteachthewhy, for catching this on the board!
1
5
184
Thank you, @NCTM, for another amazing conference! Sad it’s the last day of #NCTMCHI24, but so grateful for the time to connect and reflect. @teedjvt @marriamath @CFless @MsRepkinMath @DrCoKoMcGee @KristenMAcosta
3
1
21
724
Raise your hand if you got to play The VANG Game with @pamseda1! 🙋🏻‍♂️🙋🏻‍♂️🙋🏻‍♂️ #NCTMCHI24 Check out Dr. Seda’s website for five different versions of the game: sedaeducationalconsulting.co…
3
269
The #wearewayne crew has showed up en masse at #NCTMCHI24! It’s always fun to see familiar faces at these conferences - especially faces of amazing educators from my own hometown. 💙
1
2
21
860
Today’s the day! @cfless and I are so excited to present at #NCTMCHI24. Join us at our session, “Using Student Work Samples as Mentor Texts: Elevating Children’s Voices in Mathematics Classrooms” at 11:00. Looking forward to learning alongside all of you!
1
1
11
865
Ryan Flessner retweeted
spotifyanchor-web.app.link/e… @ryanflessner and I are reviewing the end of NCSM 2024 and the start of NCTM in Chicago. @mathedleaders you put on a heck of a conference and @NCTM is off to a really incredible start!

1
3
8
1,117
Math is everywhere! A few things I’ve seen during my time in Chicago this week…
1
5
294
And my favorite of all: A carpet with an 84-sided shape (if I counted correctly!) called an octacontatetragon - Yes, I googled that. :)
1
3
173
Let’s think together: How could we figure out the total number of sides without counting?
86
So much fun hanging with this crew last night!
#NCTM GAME NIGHT !!
2
5
401
Followed up today by visiting @FedericoChialvo at the @joyfulmaths booth. Even convinced him to autograph my copy of Numeroso!
1
1
124