Kirk Keating
@ksquaredmathns.bsky.social
Reposted by Kirk Keating
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...
Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor...
August 25, 2026 at 12:22 AM
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...
Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor...
Reposted by Kirk Keating
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...
Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor...
June 28, 2026 at 6:41 PM
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...
Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor...
Reposted by Kirk Keating
Fun math trick: Here's how we can mentally calculate cube roots
June 28, 2026 at 12:27 PM
Fun math trick: Here's how we can mentally calculate cube roots
Reposted by Kirk Keating
This is what a BTC Workshop sounds like! The beautiful buzz of Thinking: curiosity awakened, conversations started.
Thanks Düsseldorf for your energy! 🐝⠄⠂⠠⠂݆
Thanks Düsseldorf for your energy! 🐝⠄⠂⠠⠂݆
June 22, 2026 at 5:12 PM
This is what a BTC Workshop sounds like! The beautiful buzz of Thinking: curiosity awakened, conversations started.
Thanks Düsseldorf for your energy! 🐝⠄⠂⠠⠂݆
Thanks Düsseldorf for your energy! 🐝⠄⠂⠠⠂݆
Reposted by Kirk Keating
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...
share.snipd.com/snip/3010151...
June 21, 2026 at 8:27 AM
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...
share.snipd.com/snip/3010151...
Reposted by Kirk Keating
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
Check them out on the Photos page.
ntimages.weebly.com
June 21, 2026 at 2:03 PM
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
Check them out on the Photos page.
ntimages.weebly.com
Reposted by Kirk Keating
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
February 24, 2026 at 1:55 AM
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
Reposted by Kirk Keating
Hey teachers! I appreciate you this week and every week.
New post: No Prerequisites fawnnguyen.substack.com/p/no-prerequ...
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
May 4, 2026 at 8:35 PM
Hey teachers! I appreciate you this week and every week.
New post: No Prerequisites fawnnguyen.substack.com/p/no-prerequ...
New post: No Prerequisites fawnnguyen.substack.com/p/no-prerequ...
Reposted by Kirk Keating
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...
www.youtube.com/watch?v=Sfi...
April 25, 2026 at 7:07 PM
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...
www.youtube.com/watch?v=Sfi...
Reposted by Kirk Keating
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
robertkaplinsky.com/lessons
April 22, 2026 at 10:14 PM
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
robertkaplinsky.com/lessons
Reposted by Kirk Keating
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!
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
April 18, 2026 at 4:37 PM
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!
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!
Reposted by Kirk Keating
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
This one is about working with ratios. I hope you like it!
Here's the link:
drive.google.com/file/d/1X3ZV...
#iteachmath
April 11, 2026 at 2:07 PM
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
This one is about working with ratios. I hope you like it!
Here's the link:
drive.google.com/file/d/1X3ZV...
#iteachmath
Reposted by Kirk Keating
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!
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…
m.youtube.com
April 11, 2026 at 4:37 PM
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!
Check out this video to ensure you’re supporting teachers who are making the switch to a Thinking Classroom!
Reposted by Kirk Keating
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...
Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor...
April 5, 2026 at 6:41 PM
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...
Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor...
Reposted by Kirk Keating
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...
robertkaplinsky.com/work/ri...
March 29, 2026 at 11:13 PM
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...
robertkaplinsky.com/work/ri...
Reposted by Kirk Keating
A quick way to check if a number is divisible by 11
March 24, 2026 at 3:37 PM
A quick way to check if a number is divisible by 11
Reposted by Kirk Keating
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?
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?
March 22, 2026 at 9:27 AM
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?
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?
Reposted by Kirk Keating
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...
robertkaplinsky.com/present...
March 12, 2026 at 10:34 PM
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...
robertkaplinsky.com/present...
Reposted by Kirk Keating
You know you want to spend the day with me and Jenna, or with Dave and Amy!
🚨 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
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
March 3, 2026 at 1:58 AM
You know you want to spend the day with me and Jenna, or with Dave and Amy!
Reposted by Kirk Keating
🚨 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
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
March 3, 2026 at 1:56 AM
🚨 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
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
btcmoncton26.netlify.app
#btcmoncton26
BTC Moncton 26
btcmoncton26.netlify.app
February 26, 2026 at 10:22 PM
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
btcmoncton26.netlify.app
#btcmoncton26
Reposted by Kirk Keating
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?
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?
February 19, 2026 at 7:19 PM
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?
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
REGISTRATION is NOW OPEN!
🎟️ Get your ticket here: buytickets.at/btcregionalc...
@btcthinks.bsky.social @peterliljedahl.bsky.social
Select tickets – Building Thinking Classrooms Regional Conference - Moncton 2026 – Harrison Trimble High School
Building Thinking Classrooms Regional Conference - Moncton 2026 – Harrison Trimble High School, Mon 6 Jul 2026 - Tue 7 Jul 2026
buytickets.at
February 13, 2026 at 12:12 AM
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
REGISTRATION is NOW OPEN!
🎟️ Get your ticket here: buytickets.at/btcregionalc...
@btcthinks.bsky.social @peterliljedahl.bsky.social
Reposted by Kirk Keating
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...
Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor...
February 7, 2026 at 10:49 PM
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...
Learn more about Peter Liljedahl's Building Thinking Classrooms online workshop at grassrootsworkshops.com/wor...
Reposted by Kirk Keating
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...
Register for Peter Liljedahl's Building Thinking Classrooms online workshop by Fri 2/6.
grassrootsworkshops.com/wor...
January 30, 2026 at 12:02 AM
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...
Register for Peter Liljedahl's Building Thinking Classrooms online workshop by Fri 2/6.
grassrootsworkshops.com/wor...