Investigations 3
@inv3math.bsky.social
The Investigations Center for Curriculum and Professional Development supports users of Investigations, the K-5 math curriculum developed at TERC. investigations.terc.edu
Reposted by Investigations 3
December 2, 2025 at 9:54 PM
Reposted by Investigations 3
Students decompose composite numbers and identify prime factors using factor trees. www.oise.utoronto.ca/robertson/le...
Prime Factor
Students decompose composite numbers and identify prime factors using factor trees.
www.oise.utoronto.ca
December 1, 2025 at 2:09 PM
Students decompose composite numbers and identify prime factors using factor trees. www.oise.utoronto.ca/robertson/le...
👇
In Gr 4:
The classroom T asked students to find examples of parallel and perpendicular lines in the classroom. Students saw some nice, clear examples in the chart paper, the flag, and a calendar. A student asked me about this one: a wicker basket.
#elemmathchat
🧵 1/3
The classroom T asked students to find examples of parallel and perpendicular lines in the classroom. Students saw some nice, clear examples in the chart paper, the flag, and a calendar. A student asked me about this one: a wicker basket.
#elemmathchat
🧵 1/3
December 1, 2025 at 2:45 PM
👇
Reposted by Investigations 3
Marilyn Burns leads Sessions 2 of the Speaker Series! Join Marilyn as she shares one-on-one video interviews with students solving arithmetic problems mentally and explains how they reason. Takeaways connect students’ thinking to classroom instruction.
Learn more: hubs.la/Q03VRLVZ0
Learn more: hubs.la/Q03VRLVZ0
December 1, 2025 at 2:03 PM
Marilyn Burns leads Sessions 2 of the Speaker Series! Join Marilyn as she shares one-on-one video interviews with students solving arithmetic problems mentally and explains how they reason. Takeaways connect students’ thinking to classroom instruction.
Learn more: hubs.la/Q03VRLVZ0
Learn more: hubs.la/Q03VRLVZ0
Reposted by Investigations 3
I'm looking forward to giving this talk. Hope you'll join me.
Session 2 is coming soon! Join us on 12/10 at 7pm EST, to hear @mburnsmath.bsky.social talk about how reasoning is the essential foundation for building students' understanding of mathematics. Register here: tinyurl.com/3fnxwbtc
December 1, 2025 at 2:39 PM
I'm looking forward to giving this talk. Hope you'll join me.
"When does it make sense to change [cultural] elements? When does it not?" @jennalaib.bsky.social shares 3 examples that explore this question. "It’s interesting to think about how these interact w/ student experiences, as we continue to make complex choices within our professional practice." 1
Session 1 of our Speaker Series, by @pamseda1.bsky.social, got Session 3's @jennalaib.bsky.social thinking: "When does it make sense to change [cultural] elements?... The answer isn’t a checklist or a directive. It’s a stance... I strive for intentionality & balance... Why this shift? & for whom?
November 24, 2025 at 7:40 PM
"When does it make sense to change [cultural] elements? When does it not?" @jennalaib.bsky.social shares 3 examples that explore this question. "It’s interesting to think about how these interact w/ student experiences, as we continue to make complex choices within our professional practice." 1
Is a hot dog a sandwich? Is an elevator a vehicle? Is an emoji a word?
These ?s are a provocation. "We think we know what a vehicle, or sandwich, or word is, but we find our reasoning shifting as problematic cases arise. As a result, our implicit definitions become explicit & more clearly defined."
These ?s are a provocation. "We think we know what a vehicle, or sandwich, or word is, but we find our reasoning shifting as problematic cases arise. As a result, our implicit definitions become explicit & more clearly defined."
On vehicles and the meanings of words | Talking Math With Your Kids
The following is an extended excerpt of a cover letter for Is It a Vehicle?, a book I have play-tested many hundreds of times in a wide range of situations over the last five-plus years and not yet fo...
talkingmathwithkids.com
November 19, 2025 at 9:09 PM
Is a hot dog a sandwich? Is an elevator a vehicle? Is an emoji a word?
These ?s are a provocation. "We think we know what a vehicle, or sandwich, or word is, but we find our reasoning shifting as problematic cases arise. As a result, our implicit definitions become explicit & more clearly defined."
These ?s are a provocation. "We think we know what a vehicle, or sandwich, or word is, but we find our reasoning shifting as problematic cases arise. As a result, our implicit definitions become explicit & more clearly defined."
"Taking out the numbers and question allowed every student to think about the meaning of the sentence, the implied mathematical connections, and plan a solution pathway before jumping into a solution attempt." #StoryProblems #NumberlessWordProblems #MathematicalAgency
Making Sense of Word Problems
I am sure we have all seen it happen at one time or another in math class. We give a student a story problem to solve and after a quick skim, the student pulls the numbers from the problem, compute…
kgmathminds.com
November 19, 2025 at 8:40 PM
"Taking out the numbers and question allowed every student to think about the meaning of the sentence, the implied mathematical connections, and plan a solution pathway before jumping into a solution attempt." #StoryProblems #NumberlessWordProblems #MathematicalAgency
"'6yo: If 0 + 0 is 1, then would 8 times 0 be 4?'
... These “What if” questions are a sign that a child is taking a sort of radical ownership over their mathematical thinking. ... He wants something to be true to explore an idea, so he’s just doing it"!
... These “What if” questions are a sign that a child is taking a sort of radical ownership over their mathematical thinking. ... He wants something to be true to explore an idea, so he’s just doing it"!
My 6yo asked me this morning:
"If 0 + 0 = 1, would 8 times 0 be 4?"
I wrote a blog post about it.
mathforlove.com/2025/11/big-...
#tmwyk #iteachmath #mtbos
"If 0 + 0 = 1, would 8 times 0 be 4?"
I wrote a blog post about it.
mathforlove.com/2025/11/big-...
#tmwyk #iteachmath #mtbos
Big Ifs - Math For Love
0 0 votes Article Rating
mathforlove.com
November 19, 2025 at 8:31 PM
"'6yo: If 0 + 0 is 1, then would 8 times 0 be 4?'
... These “What if” questions are a sign that a child is taking a sort of radical ownership over their mathematical thinking. ... He wants something to be true to explore an idea, so he’s just doing it"!
... These “What if” questions are a sign that a child is taking a sort of radical ownership over their mathematical thinking. ... He wants something to be true to explore an idea, so he’s just doing it"!
Join us tomorrow at 7pm EST!
Register here: tinyurl.com/3fnxwbtc
Register here: tinyurl.com/3fnxwbtc
First up? @pamseda1.bsky.social on practical ways to design math experiences that build on students’ everyday lives & classrooms where every child feels seen, valued, & capable of deep mathematical thinking. 7-8p EST on 11/19/25. Learn more and register here: tinyurl.com/3fnxwbtc
November 18, 2025 at 2:25 PM
Join us tomorrow at 7pm EST!
Register here: tinyurl.com/3fnxwbtc
Register here: tinyurl.com/3fnxwbtc
Reposted by Investigations 3
"Children begin to ask: 'What could I try here?' rather than 'What should I be doing?'
And in that shift, we help them become not just accurate calculators, but empowered mathematicians." /2
And in that shift, we help them become not just accurate calculators, but empowered mathematicians." /2
November 13, 2025 at 4:44 PM
"Children begin to ask: 'What could I try here?' rather than 'What should I be doing?'
And in that shift, we help them become not just accurate calculators, but empowered mathematicians." /2
And in that shift, we help them become not just accurate calculators, but empowered mathematicians." /2
"I was surprised to learn that...my students felt strongly about not being told 'the answer'... One student wrote about the importance of having time to process the information and another wrote that listening to other students’ ideas 'helps me unstuck myself.'” - a G3 teacher #StudentReflection
We've heard similar things from elementary math teachers, about what they've learned from using our Student Reflection Tool over the course of the year!
www.terc.edu/mathequityfo...
www.terc.edu/mathequityfo...
November 14, 2025 at 3:22 PM
"I was surprised to learn that...my students felt strongly about not being told 'the answer'... One student wrote about the importance of having time to process the information and another wrote that listening to other students’ ideas 'helps me unstuck myself.'” - a G3 teacher #StudentReflection
A blog from the kick-off speaker in the Forum for Equity in Elementary Math's 2025-2026 Speaker Series, @pamseda1.bsky.social!
Register here: tinyurl.com/3fnxwbtc
Register here: tinyurl.com/3fnxwbtc
"Students learn more—& better—when they are responsible for proving & defending their ideas. By making validation a shared responsibility, we prepare students not just to 'get the right answer,' but to become confident thinkers who know how to learn." - @pamseda1.bsky.social
From Gatekeeper to Guide: Classroom Shifts That Free Teachers and Empower Students
Creating classrooms where students take the lead, and teachers reclaim the space to notice, guide, and grow learning.Ms. Johnson is on her feet the entire class period. She hustles from desk to desk, ...
www.sedaeducationalconsulting.com
November 14, 2025 at 3:16 PM
A blog from the kick-off speaker in the Forum for Equity in Elementary Math's 2025-2026 Speaker Series, @pamseda1.bsky.social!
Register here: tinyurl.com/3fnxwbtc
Register here: tinyurl.com/3fnxwbtc
Next Wednesday! Register now! tinyurl.com/3fnxwbtc
First up? @pamseda1.bsky.social on practical ways to design math experiences that build on students’ everyday lives & classrooms where every child feels seen, valued, & capable of deep mathematical thinking. 7-8p EST on 11/19/25. Learn more and register here: tinyurl.com/3fnxwbtc
November 14, 2025 at 3:12 PM
Next Wednesday! Register now! tinyurl.com/3fnxwbtc
Reposted by Investigations 3
First up? @pamseda1.bsky.social on practical ways to design math experiences that build on students’ everyday lives & classrooms where every child feels seen, valued, & capable of deep mathematical thinking. 7-8p EST on 11/19/25. Learn more and register here: tinyurl.com/3fnxwbtc
November 4, 2025 at 9:41 PM
First up? @pamseda1.bsky.social on practical ways to design math experiences that build on students’ everyday lives & classrooms where every child feels seen, valued, & capable of deep mathematical thinking. 7-8p EST on 11/19/25. Learn more and register here: tinyurl.com/3fnxwbtc
Reposted by Investigations 3
We are thrilled to announce our 2025-26 Speaker Series! Knowing Our Students: Fostering Equitable Math Learning Communities focuses on the importance of knowing students as mathematicians & as learners w/ diverse backgrounds, experiences & interests. Learn more & register here: tinyurl.com/3fnxwbtc
November 4, 2025 at 9:27 PM
We are thrilled to announce our 2025-26 Speaker Series! Knowing Our Students: Fostering Equitable Math Learning Communities focuses on the importance of knowing students as mathematicians & as learners w/ diverse backgrounds, experiences & interests. Learn more & register here: tinyurl.com/3fnxwbtc
Reposted by Investigations 3
We're excited to share a new publication from TERC’s Gilly Puttick, Debra Bernstein, and Mike Cassidy! Dive into their latest research to see how teachers’ perception of the important role of systems in biology and game design can support students’ systems thinking.
tinyurl.com/yc5vbpkmNew
tinyurl.com/yc5vbpkmNew
November 5, 2025 at 3:10 PM
We're excited to share a new publication from TERC’s Gilly Puttick, Debra Bernstein, and Mike Cassidy! Dive into their latest research to see how teachers’ perception of the important role of systems in biology and game design can support students’ systems thinking.
tinyurl.com/yc5vbpkmNew
tinyurl.com/yc5vbpkmNew
SO looking forward to Session 2! (And all of the Sessions!)
November 5, 2025 at 5:58 PM
SO looking forward to Session 2! (And all of the Sessions!)
Reposted by Investigations 3
I'm looking forward to being one of the presenters at TERC's Speaker Series and also hearing from the other speakers.
www.terc.edu/mathequityfo...
www.terc.edu/mathequityfo...
Speaker Series 2025–2026
Knowing Our Students: Fostering Equitable Math Learning Communities The 2025-2026 Series focuses on the importance of knowing students as math learners and as learners with diverse backgrounds, exper...
www.terc.edu
November 5, 2025 at 5:19 AM
I'm looking forward to being one of the presenters at TERC's Speaker Series and also hearing from the other speakers.
www.terc.edu/mathequityfo...
www.terc.edu/mathequityfo...
Reposted by Investigations 3
Just a reminder that our Friends of Flynn Education is now free for everyone! Come join us at flynneducation.com/memberinfo/!
November 5, 2025 at 5:17 PM
Just a reminder that our Friends of Flynn Education is now free for everyone! Come join us at flynneducation.com/memberinfo/!
Love this! How a child "stacks" the decks tells us so much about what they understand!
I often institute slightly bespoke rules to improve card games, but my very best one is my special rule for War:
For that game only, my kid can set up the decks (in size, composition, and order) however she chooses.
A tweak that greatly improves the enjoyment of all players
For that game only, my kid can set up the decks (in size, composition, and order) however she chooses.
A tweak that greatly improves the enjoyment of all players
October 31, 2025 at 7:03 PM
Love this! How a child "stacks" the decks tells us so much about what they understand!
Reposted by Investigations 3
Reposted by Investigations 3
Thoughts from #ATMNE25: When looking at school culture, consider, "How are adults talking about kids? How are admin talking about teachers?" Need to be viewing both with a mindset of growth, opportunity, not deficit. @marriamath.bsky.social
October 30, 2025 at 5:37 PM
Thoughts from #ATMNE25: When looking at school culture, consider, "How are adults talking about kids? How are admin talking about teachers?" Need to be viewing both with a mindset of growth, opportunity, not deficit. @marriamath.bsky.social
Come learn with Megan Murray and Arusha Hollister tomorrow morning (9:40) to learn about Excursions, sequences of K-5 math activities designed to connect students with their interests, families, and communities! #ATMNE25
October 30, 2025 at 9:04 PM
Come learn with Megan Murray and Arusha Hollister tomorrow morning (9:40) to learn about Excursions, sequences of K-5 math activities designed to connect students with their interests, families, and communities! #ATMNE25
Reposted by Investigations 3
Going to ATMNE? Check out Arusha Hollister and Megan Murray's session about Excursions, Friday at 940!
October 29, 2025 at 1:20 PM
Going to ATMNE? Check out Arusha Hollister and Megan Murray's session about Excursions, Friday at 940!