Build 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...

Build 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...

Fun math trick: Here's how we can mentally calculate cube roots

This is what a BTC Workshop sounds like! The beautiful buzz of Thinking: curiosity awakened, conversations started. Thanks Düsseldorf for your energy! 🐝⠄⠂⠠⠂݆

This 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...

I finally took some time to add submitted images to the Number Talk Images website. Check them out on the Photos page. ntimages.weebly.com

The 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

Hey teachers! I appreciate you this week and every week. New post: No Prerequisites fawnnguyen.substack.com/p/no-prerequ...

No Prerequisites

Two problems worth posing to every student in the room

fawnnguyen.substack.com

I 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...

I 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

Know 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!

ISD x BTC 2026 Flyer.pdf

drive.google.com

Check 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

Coaches!! 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!

What Teachers Need from Admin and Coaches to Build Thinking Classrooms

In 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…

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Build 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...

Most 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...

A quick way to check if a number is divisible by 11

This 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?

If 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...

You know you want to spend the day with me and Jenna, or with Dave and Amy!

Jenna Laib@jennalaib.bsky.social · 7mo ago

🚨 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

🚨 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

Check 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 #btcmoncton26

Hot 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?

Join 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.social

Build 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...

Want 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...

Secondary 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...

Registration 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...

Had 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

I 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.

Click on the link below to check out my latest newsletter: drive.google.com/file/d/1MHZp... Hope you like it! #iteachmath