Ryan Flessner
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ryanflessner.bsky.social
Ryan Flessner
@ryanflessner.bsky.social
330 followers 280 following 180 posts
Professor of Teacher Education at Butler University. My passions are math education, practitioner inquiry, and equitable and just schooling for all students. Opinions are my own.
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ryanflessner.bsky.social
#identifytheseshapes #iteachmath
Irregular shapes in carpet patterns. More geometric designs in the carpet.
October 18, 2025 at 3:27 PM
ryanflessner.bsky.social
Hey, @sneffleupagus.bsky.social, look who we met! Fun to make the mutual friend connection!

@mdeutschmtl.bsky.social
Ryan and Courtney with Michael Deutsch.
October 18, 2025 at 3:15 PM
ryanflessner.bsky.social
Trying my best to get all the lovely people in the picture.
Three large dinner tables full of the #mtbos crew.
October 18, 2025 at 1:23 AM
ryanflessner.bsky.social
Last night deliciousness with the #mtbos crew at #NCTMATL25. Great food, even better company.

@jharker314.bsky.social @mrkitmath.bsky.social @jennalaib.bsky.social @bscribmather.bsky.social @lbrookepowers.bsky.social @cfless.bsky.social @leslienielsen.bsky.social
Ryan at a dinner table at Mary Mac’s Tea Room in Atlanta, Georgia.
October 18, 2025 at 12:56 AM
ryanflessner.bsky.social
Brain dumping and reflecting with some of the best math educators I know at #NCTMATL25

@thekarina74.bsky.social @cfless.bsky.social @iteachthewhy.bsky.social @tjmath.bsky.social
Ryan at a lunch table with Karina Moran, Courtney Flessner, Laura Tomas, and T.J. Jemison.
October 17, 2025 at 4:54 PM
ryanflessner.bsky.social
Dinner and Karaoke Night fun with friends at #NCTMATL25

@lbmathemagician @zakchamp.bsky.social @karinamorena @approxnormal.bsky.social @sneffleupagus.bsky.social @marriacarrington @alisonmellomath.bsky.social @pwharris.bsky.social @kimmontague.bsky.social @cfless.bsky.social
A dinner table of math educators dining and talking math! A group of math educators by the Olympic Rings in Atlanta. NCTM folks heading in to sing their hearts out at Karaoke Night!
October 17, 2025 at 12:51 PM
ryanflessner.bsky.social
First day of #NCTMATL25 is in the books. Excited to continue thinking and learning alongside all of you!

@fawnnguyen.substack.com @cathyfosnot @ryandent @carolmosesson @jennalaib.bsky.social @kristenacosta.bsky.social @anneliserecord.bsky.social
Ryan hearing Fawn Nguyen speak live for the first time! Ryan with Ryan Dent, Cathy Fosnot, and the “Submarine Sandwich” teacher from the Field Trips unit, Carol Mosesson. Ryan with Jenna Laib. Ryan with Kristen Acosta and Ann Elise Record.
October 17, 2025 at 12:39 PM
ryanflessner.bsky.social
What an honor it was to present with one of my favorite math colleagues, @leslienielsen.bsky.social. Thanks to those who came to support our work, engage in discussion, and push our thinking.
Cover slide from Leslie and Ryan’s presentation, Curiosity as a Mechanism for Teacher Learning Ryan with Leslie Nielsen after the presentation Sample of participant strategy (Tomisha). Area model and partial products are used. Participants in the session talk about their solutions to one of the problems posed.
October 16, 2025 at 5:52 PM
ryanflessner.bsky.social
What a fun night it was at #NCTMATL25 #NCTM25 Game Night!

@jharker314.bsky.social @bscribmather.bsky.social @triangleman.bsky.social @cfless.bsky.social @nankinator.bsky.social @moniquepollitt @novakatz.bsky.social
Ryan with Jeff Harker and Brendan Scribner. Ryan with Christopher Daniel. Christopher is holding up a bag of hat tiles that he’s autographed for Ryan. Ryan with Courtney Flessner, Sean Nank, Monique Pollitt, and Nova Katz. Ryan with Sean Nank and Monique Pollitt.
October 16, 2025 at 3:47 AM
ryanflessner.bsky.social
A night early for Karoake Night at #NCTMATL25 #NCTM25, but we’ll be back tomorrow!

@kimmontague.bsky.social @alisonmellomath.bsky.social @kourtneypeters.bsky.social @sneffleupagus.bsky.social @cfless.bsky.social @novakatz.bsky.social @bscribmather.bsky.social
Ryan with Kim Montague, Alison Mellow, Kourtney Peters, Shelby Strong, Courtney Flessner, Nova Katz, and Brendan Scribner sharing a night cap at NCTM.
October 16, 2025 at 3:40 AM
ryanflessner.bsky.social
Finding lots of #geometry at #NCTMATL25 #NCTM25!

#rhombus #triangle #parallelogram #kite #pentagon #quadralateral #linesegment #symmetry #translation

What else can you find?
A multi-colored carpet with geometric shapes. A multi-colored carpet with geometric shapes.
October 16, 2025 at 12:26 AM
ryanflessner.bsky.social
Tonight’s the night! #NCTMATL25 #NCTM25
A poster advertising NCTM’s Game Night @ 8pm tonight in OMNI International Ballroom E.
October 15, 2025 at 10:04 PM
ryanflessner.bsky.social
Second set of fun with friends at #NCSM25!

@annieforest.bsky.social @iteachthewhy.bsky.social @cluzniak.bsky.social @mandymathed.bsky.social @coreydrake @cfless.bsky.social @kourtneypeters @kimmontague.bsky.social @pwharris.bsky.social
Ryan with Annie Forest and Laura Tomas. Ryan with Chris Luzniak and Mandy Jensen. Ryan with Corey Drake. Ryan with Courtney Flessner and the “Math is Figureoutable” crew: Kourtney Peters, Kim Montague, and Pam Harris.
October 15, 2025 at 5:08 PM
ryanflessner.bsky.social
Day Two of #NCSM25 didn’t disappoint!
@nolanfossum.bsky.social @crystalhillmortin @cfless.bsky.social @kimrimbey.bsky.social @iteachthewhy.bsky.social @amandahayes
Ryan with Nolan Fossum. Ryan with Crystal Hill-Morton. Ryan with Courtney Flessner, Kim Rimbey, and Laura Tomas. Ryan with Courtney Flessner and Amanda Hayes.
October 15, 2025 at 11:55 AM
ryanflessner.bsky.social
It’s shocking how incredible the lineup is at #NCSM25. The presentations are amazing, and the people are even better!

@heidisabnani.bsky.social @mollyvokey.bsky.social
@lieslmcconchie.bsky.social @pamseda1.bsky.social #husbandstephen
Ryan with Heidi Sabnani and Molly Vokey. Ryan with Liesl McConchie. Ryan with the dynamic duo of Dr. Pam Seda and her husband, Stephen.
October 14, 2025 at 1:07 AM
ryanflessner.bsky.social
It’s the first full day of #NCSM25! I’m grateful to be surrounded by such incredible thinkers!

@iteachthewhy.bsky.social @cfless.bsky.social @akademic67.bsky.social @sneffleupagus.bsky.social @mshereth.bsky.social @deborahpeartcrayton
Laura Tomas, Courtney Flessner, and Ryan with Gloria Ladson-Billings after her NCSM25 Opening Keynote. Ryan with Shelby Strong and Ella Hereth. Ryan with Deborah Peart Crayton and Courtney Flessner.
October 14, 2025 at 1:00 AM
ryanflessner.bsky.social
One of the most influential mentors I’ve had is @akademic67.bsky.social. Her ideas, her depth of care, her fight, her wit, and-of course-her shoes…all unparalleled and impeccable. Everything she is and does for kids, for teachers, for education is what we should all aspire to be and do. #NCSM25
Ryan with Gloria Ladson-Billings at NCSM25 in Atlanta, Georgia.
October 14, 2025 at 12:53 AM
ryanflessner.bsky.social
And that’s a wrap on Sunday at #NCSM25. Can’t wait for @akademic67.bsky.social’s keynote tomorrow morning!

@mnmmath.bsky.social @mathematize4all.bsky.social @jharker314.bsky.social @cfless.bsky.social @nankinator.bsky.social @rob-baier.bsky.social @mfannie.bsky.social
After dinner selfie with Ryan, Melynee Naegele, Rachel Lambert, Jeff Harker, and Courtney Flessner. Ryan with Sean Nank and Melynee Naegele. Ryan with Rob Baier and Annie Fetter.
October 13, 2025 at 3:05 AM
ryanflessner.bsky.social
Best part of #NCSM25 so far: Having a day to acclimate to Atlanta and catch up with all the fun people! @mnmmath.bsky.social @amyschang.bsky.social @iteachthewhy.bsky.social @edubcleve.bsky.social @cfless.bsky.social @moniquepollock.bsky.social @mjwallus.bsky.social @patrickvennebush @nicolerigleman
Ryan with Melynee Naegele. Ryan with Amy Chang, Laura Tomas, Nova Katz, and Courtney Flessner. Ryan with Erin Wahler-Cleveland and Monique Pollitt. Ryan with Mike Wallus, Patrick Vennebush, and Nicole Rigelman of The Math Learning Center.
October 13, 2025 at 12:02 AM
ryanflessner.bsky.social
Made it to Atlanta for #NCSM25. So great to see so many familiar faces here to talk #math! @cfless.bsky.social @tjmath.bsky.social #husbansean @iteachthewhy.bsky.social @themathguru.bsky.social #marriacarrington @anneliserecord.bsky.social
Ryan with Marria Carrington, T. J. Jemison, his husband Sean, and Courtney. Ryan with Vanessa Vaharia, Courtney, Laura Tomas, and Marria Carrington. Ryan and Courtney with Ann Elise Record.
October 12, 2025 at 9:29 PM
ryanflessner.bsky.social
All set up and ready for the first day of teaching this semester. Can’t wait to meet the new group of @butleru.bsky.social COE students! #iteachmath #edusky
The picture shows a classroom at Butler University. There are eight tables in the room. Three tables have table tents on them for students to create name plates. Five tables have provocations prepared to engage students in thinking about math. Tools at the provocation stations include foam cubes, Legos, game pieces, number cards, and a box of items for counting collections.
September 2, 2025 at 12:43 PM
ryanflessner.bsky.social
Quick reminder to the #mtbos and #elemmathchat crews. Get those proposals in ASAP! Who’s joining @cfless.bsky.social and me in Indy for the @nctm.org Spring Conference in February?!
A photo of an email from the National Council of Teachers of Mathematics reminding everyone that proposals are due in one week: Monday, July 14!
July 7, 2025 at 5:48 PM
ryanflessner.bsky.social
Last #BTCC25 post. What an outstanding week of learning, laughing, and loving the work I’m privileged to do!

@cfless.bsky.social @moniquepollitt
@peterliljedahl.bsky.social @amandaray @erinwahlercleveland @melisamccain
Ryan and Courtney with Monique Pollitt. Peter Liljedahl and Melisa McCain chatting with Amanda Ray and Erin Wahler-Cleveland. Ryan and Courtney pose for a selfie by beautiful Lake Washington.
July 2, 2025 at 5:53 PM
ryanflessner.bsky.social
More photos of the wonderful people who made #BTCC25 such a wonderful week.

@amandaray
@tbrzezinski.bsky.social @novakatz.bsky.social @heidisabnani.bsky.social
Ryan with Amanda Ray. Ryan with Tim Brzezinski in the midst of an intense Jenga game. Ryan with Nova Katz. Ryan with Heidi Sabnani.
July 2, 2025 at 5:41 PM
ryanflessner.bsky.social
What an amazing finish to #BTCC25. @peterliljedahl.bsky.social gave an excellent keynote, and the attendees were willing to interact with @cfless.bsky.social and me as we emceed. So grateful for this experience, and can’t wait to see everyone next year in Connecticut for #BTCC26!
Ryan, Peter Liljedahl, and Courtney pose for a selfie with conference attendees filling the ballroom behind.
July 2, 2025 at 5:37 PM