Reposted by Kirk KeatingGrassroots Workshops @grassrootsworkshops.com · 25/08/2026Build your own Thinking Classroom using 14 research-based practices that empower students to collaborate, persevere, and think deeply and critically. Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor... 011
Reposted by Kirk KeatingGrassroots Workshops @grassrootsworkshops.com · 28/06/2026Build your own Thinking Classroom using 14 research-based practices that empower students to collaborate, persevere, and think deeply and critically. Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor... 011
Reposted by Kirk KeatingHowie Hua @howiehua.bsky.social · 28/06/2026Fun math trick: Here's how we can mentally calculate cube roots 1314
Reposted by Kirk KeatingNova Katz @novakatz.bsky.social · 22/06/2026This is what a BTC Workshop sounds like! The beautiful buzz of Thinking: curiosity awakened, conversations started. Thanks Düsseldorf for your energy! 🐝⠄⠂⠠⠂݆ 031
Reposted by Kirk KeatingNova Katz @novakatz.bsky.social · 21/06/2026This makes me think that when we have fixed mindset students, such as my fourth grader, instead of asking them to explain their thinking or do a glass assessment, we could ask them to groupitize. share.snipd.com/snip/3010151... 011
Reposted by Kirk KeatingPierre Tranchemontagne @pierretranche.bsky.social · 21/06/2026I finally took some time to add submitted images to the Number Talk Images website. Check them out on the Photos page. ntimages.weebly.com 155
Reposted by Kirk KeatingNova Scotia Math Teachers Assn @nsmta.bsky.social · 24/02/2026The Building Thinking Classrooms Regional Conference is on July 6–7, 2026 in Moncton, NB. An exciting opportunity for math teachers to learn more about fostering student thinking, collaboration, and problem-sovling. #ITeachMath #btcthinks @btcthinks.bsky.social 021
Reposted by Kirk KeatingFawn Nguyen @fawnnguyen.substack.com · 04/05/2026Hey teachers! I appreciate you this week and every week. New post: No Prerequisites fawnnguyen.substack.com/p/no-prerequ...fawnnguyen.substack.comNo PrerequisitesTwo problems worth posing to every student in the room 032
Reposted by Kirk KeatingRobert Kaplinsky @robertkaplinsky.com · 25/04/2026I love how effectively James Tanton takes down five of the most common objections to using the area model to conceptually teach multiplication. Check out his 9-minute video where he helps make sense of the madness. www.youtube.com/watch?v=Sfi... 062
Reposted by Kirk KeatingRobert Kaplinsky @robertkaplinsky.com · 22/04/2026I have over 70 real world problem-based lessons from kindergarten through high school that you can download for free and use with your students. Check them out and let me know which are your favorites in the comments. robertkaplinsky.com/lessons 051
Reposted by Kirk KeatingNova Katz @novakatz.bsky.social · 18/04/2026Know a school in Europe looking to Build some Thinking Classrooms? Know a teacher in Europe who's read the BTC book and is hungry for more? Are YOU in Europe and ready to join me!? I'll be in Dusseldorf June 8-9. Details below!drive.google.comISD x BTC 2026 Flyer.pdf 131
Reposted by Kirk KeatingJoAnn Sandford @jsandford.bsky.social · 11/04/2026Check out my latest newsletter! This one is about working with ratios. I hope you like it! Here's the link: drive.google.com/file/d/1X3ZV... #iteachmath 041
Reposted by Kirk KeatingNova Katz @novakatz.bsky.social · 11/04/2026Coaches!! Are you getting Peter’s newsletter? Check out this video to ensure you’re supporting teachers who are making the switch to a Thinking Classroom!m.youtube.comWhat Teachers Need from Admin and Coaches to Build Thinking ClassroomsIn Part 2 of this session, Peter Liljedahl shares findings from his research on how administrators and instructional coaches can support teachers in implementing Building Thinking Classrooms. A key… 011
Reposted by Kirk KeatingGrassroots Workshops @grassrootsworkshops.com · 05/04/2026Build your own Thinking Classroom using 14 research-based practices that empower students to collaborate, persevere, and think deeply and critically. Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor... 011
Reposted by Kirk KeatingRobert Kaplinsky @robertkaplinsky.com · 30/03/2026Most theme park rides have height restrictions. Sometimes you have to be taller, sometimes shorter, and sometimes in between two heights. These restrictions are a great way to introduce the idea of inequalities such as greater than and less than. robertkaplinsky.com/work/ri... 021
Reposted by Kirk KeatingHowie Hua @howiehua.bsky.social · 24/03/2026A quick way to check if a number is divisible by 11 0253
Reposted by Kirk KeatingNova Katz @novakatz.bsky.social · 22/03/2026This would be an awesome task to thin slice for productive practice with perimeter with Grades 3 & 4 @GoodQuestionstoAskInMathClass Basic: Same size area, stacked evenly Intermediate: Same size area, stacked like bricks (as shown) Advanced: 2 sizes of area, stacked evenly or like bricks Thoughts? 031
Reposted by Kirk KeatingRobert Kaplinsky @robertkaplinsky.com · 12/03/2026If you're a presenter, you'll want to read this short post about how to avoid sounding like you say the same thing every time. robertkaplinsky.com/present... 031
Reposted by Kirk KeatingShelby Strong 💗💜💙 @sneffleupagus.bsky.social · 03/03/2026You know you want to spend the day with me and Jenna, or with Dave and Amy! 272
Reposted by Kirk KeatingJenna Laib @jennalaib.bsky.social · 03/03/2026🚨 Math Ed friends in MA! ATMIM is hosting a professional learning event on March 19. There are two pathways, each with two half-day workshops K-6: @sneffleupagus.bsky.social & me 5-12: @amyschang.bsky.social & @davidporas.bsky.social Come join us! atmim.wildapricot.org/event-6549529 062
Kirk Keating @ksquaredmathns.bsky.social · 26/02/2026Check out new the BTC Moncton Regional Conference site. join us in July for two full days of learning with @peterliljedahl.bsky.social btcmoncton26.netlify.app #btcmoncton26btcmoncton26.netlify.appBTC Moncton 26 000
Reposted by Kirk KeatingHowie Hua @howiehua.bsky.social · 19/02/2026Hot take: We need to stop racing to the final answer in math class. If we only teach the procedure to get the answer, we would get so many false positives. Yeah, they got the right answer, but do they actually understand the math? 2257
Kirk Keating @ksquaredmathns.bsky.social · 13/02/2026Join us in Moncton, NB for the Building Thinking Classrooms Regional Conference on July 6–7, 2026 🧠 REGISTRATION is NOW OPEN! 🎟️ Get your ticket here: buytickets.at/btcregionalc... @btcthinks.bsky.social @peterliljedahl.bsky.socialbuytickets.atSelect tickets – Building Thinking Classrooms Regional Conference - Moncton 2026 – Harrison Trimble High SchoolBuilding Thinking Classrooms Regional Conference - Moncton 2026 – Harrison Trimble High School, Mon 6 Jul 2026 - Tue 7 Jul 2026 000
Reposted by Kirk KeatingGrassroots Workshops @grassrootsworkshops.com · 07/02/2026Build your own Thinking Classroom using 14 research-based practices that empower students to collaborate, persevere, and think deeply and critically. Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor... 011
Reposted by Kirk KeatingGrassroots Workshops @grassrootsworkshops.com · 30/01/2026Want to build your own Thinking Classroom using 14 research-based practices that empower students to collaborate, persevere, and think deeply and critically? Register for Peter Liljedahl's Building Thinking Classrooms online workshop by Fri 2/6. grassrootsworkshops.com/wor... 011
Reposted by Kirk KeatingGrassroots Workshops @grassrootsworkshops.com · 25/01/2026Secondary math teachers, come learn how to use visual patterns to help students describe functions using numbers, pictures, symbols, and words. Learn more about Fawn Nguyen's @fawnnguyen.substack.com How To Use Visual Patterns online workshop at grassrootsworkshops.com/wor... 022
Kirk Keating @ksquaredmathns.bsky.social · 21/01/2026Registration opens Friday @btcthinks.bsky.social @grassrootsworkshops.com @peterliljedahl.bsky.social Join us and engage in the self paced 6 module workshop. grassrootsworkshops.com/workshops/bu...grassrootsworkshops.comBuilding Thinking Classrooms ® - Grassroots WorkshopsBuild your own Thinking Classroom using 14 research-based practices that empower students to collaborate, persevere, and think deeply and critically. 000
Reposted by Kirk KeatingErick Lee @theericklee.bsky.social · 15/01/2026Had a wonderful evening at MoMath for the 2025 Rosenthal Prize presentation. It was great to meet everyone and to chat about the intersection of math, magic and music. @momath.bsky.social 9112
Reposted by Kirk KeatingRobert Kaplinsky @robertkaplinsky.com · 11/01/2026I had the opportunity of a lifetime to work in Barcelona, Spain where I taught 6th graders and presented to educators in Spanish about Open Middle. It was even covered in a newspaper! I am so grateful for this amazing opportunity. 1141
Reposted by Kirk KeatingJoAnn Sandford @jsandford.bsky.social · 07/01/2026Click on the link below to check out my latest newsletter: drive.google.com/file/d/1MHZp... Hope you like it! #iteachmath 022
Reposted by Kirk KeatingGrassroots Workshops @grassrootsworkshops.com · 16/12/2025Build your own Thinking Classroom using 14 research-based practices that empower students to collaborate, persevere, and think deeply and critically. Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor... 011
Reposted by Kirk KeatingRobert Kaplinsky @robertkaplinsky.com · 11/12/2025How do we find a balance between being in the classroom with students and our need to keep growing as professionals? Here's my take inspired by the Seven Habits of Highly Effective People. robertkaplinsky.com/sharpen... 011
Reposted by Kirk KeatingRobert Kaplinsky @robertkaplinsky.com · 06/12/2025Check out fractiontalks.com/ from Nat Banting for fun images that get students reasoning about fractions. They're all free and ready for you to use. 046
Reposted by Kirk KeatingTODOS: Mathematics for ALL @todos-math.bsky.social · 02/12/2025Join us Dec 2 @ 4PM PST as HS math teachers Monorasmey Arun, Ed Schneider, Yuliana Segura & Megan Wood share their work w/ Evidence Based Grading-its philosophy, equity focus, & how it’s used in Alg, Geo & AP Stats #MathEquity #TODOSLive #iTeachMath #EduSky Register👇 us02web.zoom.us/webinar/regi... 075
Reposted by Kirk KeatingJason To | 杜澤信 @mrjasonto.com · 15/11/2025Check out the latest episode of the @thinkthankthunk.ca podcast to hear me rant about inquiry-based vs. explicit instruction and how they fit: thinkthankthunk.ca/ep-27/ or wherever you get your pods.thinkthankthunk.caEp 27 - Jason To - Think Thank ThunkJason To joins Kyle to bridge the gap between cognitive science and Thinking Classrooms. Learn how cognitive load and collective memory may help explain why Building Thinking Classrooms works. 051
Reposted by Kirk KeatingBTCthinks.bsky.social @btcthinks.bsky.social · 03/11/2025Celebrating 5 yrs since Building Thinking Classrooms in Mathematics, Grades K-12 was published! 🌍 The book has sparked a movement, been translated into 15 languages & inspired classrooms everywhere. Here’s to curious minds, thinking deeply and bravely! #btcthinks #iteachmath 041
Reposted by Kirk KeatingRobert Kaplinsky @robertkaplinsky.com · 31/10/2025This lesson uses a time lapse thermometer video as a context for discussing integer operations and absolute value. The video should provide some added meaning to the classic temperature drop problem. robertkaplinsky.com/work/te... 031
Reposted by Kirk KeatingRobert Kaplinsky @robertkaplinsky.com · 30/10/2025Want to challenge your Geometry students to find the area of triangles? Try out this Open Middle problem from Dan Wulf. www.openmiddle.com/area-of-... 041
Reposted by Kirk KeatingMike Flynn @mikeflynn55.bsky.social · 29/10/2025Avoid this phrase if you don’t want to stigmatize the use of manipulatives in your math class. #math #teaching #btc 0103
Reposted by Kirk KeatingDavid Poras @davidporas.bsky.social · 26/10/2025Interested in learning more about the FREE Polypad Virtual Manipulatives from @amplifyeducation.bsky.social? Sign up for the next Polypad webinar on Nov 5th at 7 PM ET. Even if you can’t make it, sign up to receive a link to the recording. tinyurl.com/5fb4m48z 099
Reposted by Kirk KeatingBTCthinks.bsky.social @btcthinks.bsky.social · 27/10/2025Mathematics Tasks for the Thinking Classroom (6-12), @pgliljedahl.bsky.social & @webbkyle.bsky.social's new book, is shipping globally! ✅ 20 Non-Curricular Tasks ✅ 30 Curricular Tasks ✅ Tips for moving from page to practice Get discounts here: linktr.ee/btcthinks #thinkingclassrooms #btcthinks 052
Reposted by Kirk KeatingDwayne Slobodnick @mrslobodnick.bsky.social · 24/10/2025The morning sessions on #RichMathTasks at #NSMTA2025 went great. Wonderful participation from everyone! 043
Kirk Keating @ksquaredmathns.bsky.social · 24/10/2025Math is figureoutable with @pwharris.bsky.social. lots of additive & multiplicative reasoning through problem strings to help us construct strategies, models, and concepts. @nsmta.bsky.social #NSMTA2025 041
Reposted by Kirk KeatingDwayne Slobodnick @mrslobodnick.bsky.social · 24/10/2025Looking forward to presenting tomorrow on #MathRichTasks at #NSMTA2025. 032
Reposted by Kirk KeatingNova Scotia Math Teachers Assn @nsmta.bsky.social · 24/10/2025Kelly Power, presenting on Creating Leveled Assessments at #NSMTA2025. 031
Reposted by Kirk KeatingNova Scotia Math Teachers Assn @nsmta.bsky.social · 24/10/2025Tomorrow is the day! The #NSMTA2025 conference will bring together 800 mathematics teachers from across Nova Scotia. A great day to connect, learn and share. #ITeachMath 072
Reposted by Kirk KeatingRobert Kaplinsky @robertkaplinsky.com · 23/10/2025Have you seen #ObserveMe but want to learn more? Check out these links: What it is: robertkaplinsky.com/observeme Ignite talk on it: robertkaplinsky.com/observe... Interviews with teachers: robertkaplinsky.com/tag/obs... Pro tips: robertkaplinsky.com/trouble... 011
Reposted by Kirk KeatingRobert Kaplinsky @robertkaplinsky.com · 20/10/2025Can your high school students create a parallelogram, triangle, or rectangle by listing their points when given one? Find out using these three Open Middle problem from Bryan Anderson. www.openmiddle.com/creating... www.openmiddle.com/creating... www.openmiddle.com/creating... 032
Reposted by Kirk KeatingDavidPetro314 @davidpetro314.bsky.social · 19/10/2025[New Post] Ontario Math Links - My favourite #math related links from this week: ontariomath.blogspot.com/2025/10/math... Links and help from @howiehua.bsky.social @looneymath.bsky.social @mnmmath.bsky.social @abeljennifer.bsky.social @benjamindickman.bsky.social &more #MathChat #MTBoS #iTeachMath 1103
Reposted by Kirk KeatingKyle Webb @webbkyle.bsky.social · 19/10/2025After watching our book ship worldwide, my own copies finally landed. Surreal to say the least! So excited about what @pgliljedahl.bsky.social and I created, and even moreso to get this into the hands of teachers! #buildingthinkingclassrooms @btcthinks.bsky.social 0111