Jason To | 杜澤信
@mrjasonto.com
School streaming/tracking abolitionist. K-12 mathematics & numeracy coordinator @tdsbmath.bsky.social improving math teaching & learning for 240,000 students in @tdsb.on.ca. 3-time #NHL94 SNES world champion.
➡️ http://mrjasonto.com
➡️ http://mrjasonto.com
Check 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.ca/ep-27/
or wherever you get your pods.
Ep 27 - Jason To - Think Thank Thunk
Jason 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.
thinkthankthunk.ca
November 15, 2025 at 6:00 PM
Check 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.ca/ep-27/
or wherever you get your pods.
Reposted by Jason To | 杜澤信
Implementing our Shaping Algebraic Reasoning Patterning PD into the classroom. Students built and walked around trying to determine other groups’ pattern rule. They were able to see the rate of change and constant. Great way to start linear relations! @mrjasonto.com @tdsbmath.bsky.social
October 29, 2025 at 12:12 AM
Implementing our Shaping Algebraic Reasoning Patterning PD into the classroom. Students built and walked around trying to determine other groups’ pattern rule. They were able to see the rate of change and constant. Great way to start linear relations! @mrjasonto.com @tdsbmath.bsky.social
Reposted by Jason To | 杜澤信
How can we count efficiently? Counting Collections to start the Number Sense unit that will focus on representing, composing and decomposing numbers. Grade 3s @tdsb.on.ca Gracedale PS came up with amazing observations! @mrjasonto.com @tdsbmath.bsky.social
October 22, 2025 at 10:29 PM
How can we count efficiently? Counting Collections to start the Number Sense unit that will focus on representing, composing and decomposing numbers. Grade 3s @tdsb.on.ca Gracedale PS came up with amazing observations! @mrjasonto.com @tdsbmath.bsky.social
Reposted by Jason To | 杜澤信
Day 2 of Leadership in Destreamed Mathematics PD and leaders got to play with algebra tiles to explore how they could use them to collect like terms, add/subtract polynomials, multiply and expand, factor and complete the square. So much fun! @mrjasonto.com @tdsbmath.bsky.social
October 23, 2025 at 10:44 PM
Day 2 of Leadership in Destreamed Mathematics PD and leaders got to play with algebra tiles to explore how they could use them to collect like terms, add/subtract polynomials, multiply and expand, factor and complete the square. So much fun! @mrjasonto.com @tdsbmath.bsky.social
Reposted by Jason To | 杜澤信
Day 1 of facilitating with @codruc.bsky.social on Shaping Algebraic Reasoning with grade 7-10 teachers. Such a great PD on patterning and linear relations. Great activities to bring back to the class and do with students. @mrjasonto.com @tdsbmath.bsky.social
October 19, 2025 at 7:48 PM
Day 1 of facilitating with @codruc.bsky.social on Shaping Algebraic Reasoning with grade 7-10 teachers. Such a great PD on patterning and linear relations. Great activities to bring back to the class and do with students. @mrjasonto.com @tdsbmath.bsky.social
Reposted by Jason To | 杜澤信
Exploring unit fractions with grade 9s at Emery CI. Lots of math conversations happening! @mrjasonto.com @tdsbmath.bsky.social
October 19, 2025 at 7:39 PM
Exploring unit fractions with grade 9s at Emery CI. Lots of math conversations happening! @mrjasonto.com @tdsbmath.bsky.social
Reposted by Jason To | 杜澤信
Day 1 of Unlocking Fractions with grades 2-5 math teachers was great! Dived into equal sharing, estimating proportions and unit fractions! @tdsbmath.bsky.social @mrjasonto.com
October 19, 2025 at 7:23 PM
Day 1 of Unlocking Fractions with grades 2-5 math teachers was great! Dived into equal sharing, estimating proportions and unit fractions! @tdsbmath.bsky.social @mrjasonto.com
Reposted by Jason To | 杜澤信
Using mini whiteboards as a tool for a whole class formative assessment is so quick and easy to do. Great strategy! @mrjasonto.com @tdsbmath.bsky.social
October 19, 2025 at 7:19 PM
Using mini whiteboards as a tool for a whole class formative assessment is so quick and easy to do. Great strategy! @mrjasonto.com @tdsbmath.bsky.social
I got to meet folks from Tokona te Raki, an organization that is tackling academic streaming to promote educational equity for Māori children in New Zealand.
I shared some insights about destreaming in Ontario and they captured them in their annual report.
www.maorifutures.co.nz/research/kok...
I shared some insights about destreaming in Ontario and they captured them in their annual report.
www.maorifutures.co.nz/research/kok...
September 28, 2025 at 5:49 PM
I got to meet folks from Tokona te Raki, an organization that is tackling academic streaming to promote educational equity for Māori children in New Zealand.
I shared some insights about destreaming in Ontario and they captured them in their annual report.
www.maorifutures.co.nz/research/kok...
I shared some insights about destreaming in Ontario and they captured them in their annual report.
www.maorifutures.co.nz/research/kok...
Reposted by Jason To | 杜澤信
Day 1 of Leadership in Destreamed Mathematics🤩! Had VP/Ps,CL/ACLs & teachers analyze school data to help set goals.& Looked at formative assessments & talk about next steps through small group instruction. & Worked on linking factor trees to scientific notation! @mrjasonto.com @tdsbmath.bsky.social
September 25, 2025 at 11:19 PM
Day 1 of Leadership in Destreamed Mathematics🤩! Had VP/Ps,CL/ACLs & teachers analyze school data to help set goals.& Looked at formative assessments & talk about next steps through small group instruction. & Worked on linking factor trees to scientific notation! @mrjasonto.com @tdsbmath.bsky.social
When I’m not math-ing, I’m winning NHL94 world championships 🏆🏆🏆 @nhl94.bsky.social
September 21, 2025 at 2:32 PM
When I’m not math-ing, I’m winning NHL94 world championships 🏆🏆🏆 @nhl94.bsky.social
Reposted by Jason To | 杜澤信
I wrote up an experience using a slow reveal graph with a fourth grade class for Edutopia. ✨
By revealing graphs piece by piece, teachers can build student curiosity and guide them to more effectively make sense of data! 📊
#DataLiteracy #EduSky #MathSky
#DataLiteracy #EduSky #MathSky
The Power of Slow Reveal Graphs
Teachers can leverage students’ curiosity to explore visual representations of data in an engaging way.
edut.to
September 21, 2025 at 12:13 PM
I wrote up an experience using a slow reveal graph with a fourth grade class for Edutopia. ✨
Reposted by Jason To | 杜澤信
"Harvard can't use race as a factor in admissions, but ICE can use race as a factor in detentions" is a retrenchment essentially to a pre-Civil War understanding of the Constitution. It's vanishingly few steps removed from "Latinos have no rights which the white man is bound to respect."
September 9, 2025 at 4:44 PM
"Harvard can't use race as a factor in admissions, but ICE can use race as a factor in detentions" is a retrenchment essentially to a pre-Civil War understanding of the Constitution. It's vanishingly few steps removed from "Latinos have no rights which the white man is bound to respect."
Financial literacy education is most plagued by the relevancy issue. 13-year-olds just don’t see credit card debt as being relevant.
Also, Ontario students rank amongst the highest in the world in financial literacy. So what problem is this test trying to solve?
www.cbc.ca/news/canada/...
Also, Ontario students rank amongst the highest in the world in financial literacy. So what problem is this test trying to solve?
www.cbc.ca/news/canada/...
September 1, 2025 at 2:10 PM
Financial literacy education is most plagued by the relevancy issue. 13-year-olds just don’t see credit card debt as being relevant.
Also, Ontario students rank amongst the highest in the world in financial literacy. So what problem is this test trying to solve?
www.cbc.ca/news/canada/...
Also, Ontario students rank amongst the highest in the world in financial literacy. So what problem is this test trying to solve?
www.cbc.ca/news/canada/...
Reposted by Jason To | 杜澤信
[GIFT ARTICLE] Mathematician Eugenia Chang explores the choices we make to determine if two things — numbers, shapes, words and even people — are equal. www.nytimes.com/2025/08/30/s... #iteachmath
You Don’t Need to Be Good at Math to Enjoy It
www.nytimes.com
August 31, 2025 at 11:00 AM
[GIFT ARTICLE] Mathematician Eugenia Chang explores the choices we make to determine if two things — numbers, shapes, words and even people — are equal. www.nytimes.com/2025/08/30/s... #iteachmath
Reposted by Jason To | 杜澤信
🧵 New #openaccess pub just dropped:
"Teachers' subjectivities in responsive instruction:
When ambitious instruction encounters challenging teaching situations"
by me, Yeliz Günal Aggül, Shuqin Li, and Christine Hood
#AcademicSky #EduSky
link.springer.com/article/10.1...
"Teachers' subjectivities in responsive instruction:
When ambitious instruction encounters challenging teaching situations"
by me, Yeliz Günal Aggül, Shuqin Li, and Christine Hood
#AcademicSky #EduSky
link.springer.com/article/10.1...
Teachers’ subjectivities in responsive instruction: when ambitious practice encounters challenging teaching situations - Instructional Science
In the pursuit of inclusive classrooms, educators have identified the importance of teachers’ responsiveness to the particular students they teach. To date, research on responsive teaching has emphasi...
link.springer.com
August 22, 2025 at 2:54 PM
🧵 New #openaccess pub just dropped:
"Teachers' subjectivities in responsive instruction:
When ambitious instruction encounters challenging teaching situations"
by me, Yeliz Günal Aggül, Shuqin Li, and Christine Hood
#AcademicSky #EduSky
link.springer.com/article/10.1...
"Teachers' subjectivities in responsive instruction:
When ambitious instruction encounters challenging teaching situations"
by me, Yeliz Günal Aggül, Shuqin Li, and Christine Hood
#AcademicSky #EduSky
link.springer.com/article/10.1...
Reposted by Jason To | 杜澤信
The Racial Justice in Early Math project [Image of child's arm and some red and white counters on a desktop]
Racial bias affects early math education. Researchers are trying to stop that
Researchers say more resources, teacher awareness needed to combat racial bias in math lessons.
hechingerreport.org
August 23, 2025 at 5:53 PM
The Racial Justice in Early Math project [Image of child's arm and some red and white counters on a desktop]
Reposted by Jason To | 杜澤信
Great thread about the role of motivation/connection/interest in cognitive load theory . . . #ITeachMath #MathEd
Re: transient information effect.
In my own experience, the stuff that seems to stick has less to do w/ knowledge & more to do w/ purpose, intention, & emotional connection. What I know going on matters less than what I'm going to do with it because I can always find/figure out what I don't know.
In my own experience, the stuff that seems to stick has less to do w/ knowledge & more to do w/ purpose, intention, & emotional connection. What I know going on matters less than what I'm going to do with it because I can always find/figure out what I don't know.
August 24, 2025 at 5:08 PM
Great thread about the role of motivation/connection/interest in cognitive load theory . . . #ITeachMath #MathEd
Solid math teaching really is a strategic blend of inquiry for sense-making & agency w/ explicit instruction for skill-building & fluency.
The key is knowing how concepts progress & how students in the class learn best.
Inclusion in math ed needs BOTH approaches.
www.edweek.org/teaching-lea...
The key is knowing how concepts progress & how students in the class learn best.
Inclusion in math ed needs BOTH approaches.
www.edweek.org/teaching-lea...
How Should We Teach Math? General and Special Ed. Researchers Don't Agree
The divide makes it less likely that students who struggle will get access to proven strategies, researchers argue in a new study.
www.edweek.org
August 24, 2025 at 1:18 PM
Solid math teaching really is a strategic blend of inquiry for sense-making & agency w/ explicit instruction for skill-building & fluency.
The key is knowing how concepts progress & how students in the class learn best.
Inclusion in math ed needs BOTH approaches.
www.edweek.org/teaching-lea...
The key is knowing how concepts progress & how students in the class learn best.
Inclusion in math ed needs BOTH approaches.
www.edweek.org/teaching-lea...
MAGAs from Oklahoma need to worry a little less about leftist boogeyman teachers and a crap ton more about actually teaching kids how to read and do math. This is just bizarre and embarrassing.
apnews.com/article/okla...
apnews.com/article/okla...
August 19, 2025 at 7:59 PM
MAGAs from Oklahoma need to worry a little less about leftist boogeyman teachers and a crap ton more about actually teaching kids how to read and do math. This is just bizarre and embarrassing.
apnews.com/article/okla...
apnews.com/article/okla...
People catch flack for changing their opinions when new facts become available.
As if changing one’s position is a sign of weakness.
But changing an opinion should be seen as a sign of growth and humility.
If you’re a leader who asks others to change their minds, be ready to model it yourself.
As if changing one’s position is a sign of weakness.
But changing an opinion should be seen as a sign of growth and humility.
If you’re a leader who asks others to change their minds, be ready to model it yourself.
August 12, 2025 at 5:05 PM
People catch flack for changing their opinions when new facts become available.
As if changing one’s position is a sign of weakness.
But changing an opinion should be seen as a sign of growth and humility.
If you’re a leader who asks others to change their minds, be ready to model it yourself.
As if changing one’s position is a sign of weakness.
But changing an opinion should be seen as a sign of growth and humility.
If you’re a leader who asks others to change their minds, be ready to model it yourself.
Students using AI to complete work is a direct reflection on the school system’s focus on products & end results.
If we want students to form opinions, analyze information, and really think, then THAT needs to be what we look for. The PROCESS needs to take centre stage
www.cbc.ca/news/canada/...
If we want students to form opinions, analyze information, and really think, then THAT needs to be what we look for. The PROCESS needs to take centre stage
www.cbc.ca/news/canada/...
AI and social media are everywhere in teens' lives. Can they impact cognitive skills? | CBC News
Technology is an integral part of schooling today, but when students use ChatGPT to complete assignments or scroll TikTok to research topics, what's happening to their cognitive skills? Concern that d...
www.cbc.ca
August 12, 2025 at 1:31 AM
Students using AI to complete work is a direct reflection on the school system’s focus on products & end results.
If we want students to form opinions, analyze information, and really think, then THAT needs to be what we look for. The PROCESS needs to take centre stage
www.cbc.ca/news/canada/...
If we want students to form opinions, analyze information, and really think, then THAT needs to be what we look for. The PROCESS needs to take centre stage
www.cbc.ca/news/canada/...
Reposted by Jason To | 杜澤信
Mark Peterson’s black-and-white images of ICE agents evoke film noir and the urban-crime photography of the 1930s and ’40s. “If someone is doing everything right, and then they still get detained, it’s a crime scene,” he said.
ICE’s Spectacle of Intimidation
Immigrants showing up for court dates in Manhattan must now navigate past rows of masked federal agents.
www.newyorker.com
August 10, 2025 at 4:08 PM
Mark Peterson’s black-and-white images of ICE agents evoke film noir and the urban-crime photography of the 1930s and ’40s. “If someone is doing everything right, and then they still get detained, it’s a crime scene,” he said.
Every American who’s been unlawfully detained under this immigration dragnet should organize a class-action lawsuit. Police have to pay for this catch-and-release racial profiling.
My heart goes out to communities that must be living in a constant state of fear.
www.miamiherald.com/news/local/i...
My heart goes out to communities that must be living in a constant state of fear.
www.miamiherald.com/news/local/i...
Tasers and neck restraints: A U.S. citizen recorded his arrest by state, federal agents
“They’re not going after criminals, they’re going after landscapers and roofers,” he told the Miami Herald
www.miamiherald.com
August 10, 2025 at 9:49 PM
Every American who’s been unlawfully detained under this immigration dragnet should organize a class-action lawsuit. Police have to pay for this catch-and-release racial profiling.
My heart goes out to communities that must be living in a constant state of fear.
www.miamiherald.com/news/local/i...
My heart goes out to communities that must be living in a constant state of fear.
www.miamiherald.com/news/local/i...
Congratulations to my TDSB math teaching colleague and friend, Sam Garrison, on swimming across the freakin’ English Channel!!!
Sam trained for years and raised funds for the Daily Bread Food Bank. Read/listen to his story:
vancouver.citynews.ca/2025/08/08/t...
Sam trained for years and raised funds for the Daily Bread Food Bank. Read/listen to his story:
vancouver.citynews.ca/2025/08/08/t...
Keep calm and swim on: how a Canadian man conquered the English Channel
In July, Toronto high school teacher Sam Garrison defeated the odds and made a solo swim across the English Channel.
vancouver.citynews.ca
August 10, 2025 at 11:18 AM
Congratulations to my TDSB math teaching colleague and friend, Sam Garrison, on swimming across the freakin’ English Channel!!!
Sam trained for years and raised funds for the Daily Bread Food Bank. Read/listen to his story:
vancouver.citynews.ca/2025/08/08/t...
Sam trained for years and raised funds for the Daily Bread Food Bank. Read/listen to his story:
vancouver.citynews.ca/2025/08/08/t...