Investigations 3
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inv3math.bsky.social
Investigations 3
@inv3math.bsky.social
370 followers 600 following 190 posts
The Investigations Center for Curriculum and Professional Development supports users of Investigations, the K-5 math curriculum developed at TERC. investigations.terc.edu
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2 hours til the #NCTMATL25 exhibit hall opens.
Come by Booth 1408 for a free copy of the MPACT—
project-based learning through making units. Teachers say:
"Students are thriving with hands-on concepts. My reluctant math learners are learning how to apply math in real concepts." www.terc.edu/mpact3d/
Reposted by Investigations 3
Today our colleague @martamath0901.bsky.social received NCSM's Kay Gilliland Equity Award and delivered a "lecture" called ¡Arriba y Adelante!: Taking Steps Towards Creating Spaces of Mattering and Thriving in Mathematics #NCSM2025
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What a fabulous summary of @martamath0901.bsky.social's #NCSM2025 Kay Gilliland Equity Award talk! ¡Arriba y Adelante!: Taking Steps Towards Creating Spaces of Mattering and Thriving in Math 👇🏼👇🏼
"Was that a compliment, or was it an assumption that (my teachers) didn't believe I was capable?"

Marta Garcia speaks with such grace and kindess and love, and I'm so grateful to have her as a mentor. #NCSMRiseUp #NCSM2025
Great @sneffleupagus.bsky.social thread with wisdom from the always brilliant and wise Marta Garcia. #NCSM2025
"Was that a compliment, or was it an assumption that (my teachers) didn't believe I was capable?"

Marta Garcia speaks with such grace and kindess and love, and I'm so grateful to have her as a mentor. #NCSMRiseUp #NCSM2025
Today our colleague @martamath0901.bsky.social received the Kay Gilliland Equity Award at #NCSM2025. This thread captures so much of what she had to say! Thoughtful, powerful, inspiring, motivating. ¡Arriba y Adelante!
"Was that a compliment, or was it an assumption that (my teachers) didn't believe I was capable?"

Marta Garcia speaks with such grace and kindess and love, and I'm so grateful to have her as a mentor. #NCSMRiseUp #NCSM2025
Reposted by Investigations 3
We'll be at @nctm.org in Atlanta!
Don't miss TERC sessions on impactful math teaching — from maker-based assessments to supporting student math identity to baseball and geometry. Stop by Booth #1408 to explore the latest in STEM, grab free resources, and pick up some fun swag!
hubs.la/Q03M03ND0
TERC Staff Presenting at the NCTM Annual Meeting 2025 - TERC
Don't miss TERC staff leading sessions on impactful math teaching — from maker-based assessments to supporting student identity in math to baseball and geometry. Then stop by Booth #1408 to explore t...
hubs.la
Reposted by Investigations 3
Come try out some of our engaging, ready-to-run enrichment club activities that combine logic, adventure, and community-building, and learn how you can bring Zoombinis Clubs to your school, library, or institution. #MassCUE2025
Yes! Also: “Do only what makes sense to you and persist until it does.”

And: “You can’t teach what you don’t understand, and you can’t teach well what you don’t love.” - @mburnsmath.bsky.social
In “more than 60 years as an educator… I’ve learned…from sharing ideas with colleagues, I’ve attended workshops, I’ve attended conferences, I’ve read professional books, but my most important source of honing my teaching skills has been the students I’ve taught.”
I'm excited to present a free webinar on September 30. Register here: heinemann.zoom.us/webinar/regi...
Reposted by Investigations 3
Reposted by Investigations 3
Going to Atlanta? Come learn with Forum for Equity in Elementary Mathematics staff! #NCSM #NCTMATL25
If you're curious what a conversation like this might sound like, check out this Dialogue Box that shows how it went in a 2nd grade field test classroom.
Later, kids get Fact Cards for this set of facts. These cards focus on using what you know to solve the ones you don't yet know. Kids sort them into envelopes of Facts I Know and Facts I'm Still Working On.
After working through two sets of related problems, they talk about what they might call them, and generate other examples.
The teacher models kids' thinking with cubes.
In Investigations 3, students encounter the Near Doubles after they've worked with the Doubles facts. The focus, as throughout, is on using what you know. The teacher posts and the class discusses a set of related problems like 4+4 and 4+5 and then 4+3.
Reposted by Investigations 3
"Across contexts, cold call often created a culture of negativity, pulled time away from the main goal of the class, & didn’t do much to get kids paying attn." Read @dylanpkane.bsky.social on 4 alternatives to cold calling that "are underused, not too hard to learn, & less likely to backfire."
Why I'm Not a Fan of Cold Call
It's done badly more often than it's done well
fivetwelvethirteen.substack.com
"We may favor the idea of all students completing problems the same way using the same method because it might save time, be less confusing, and guarantee that all students have at least one method that “works every time”. But is this the actual result? And at what cost?" /3
"How many times do we as Ts try to make things easy & efficient for Ss by sharing a favorite method?...How often do we declare how simple this is w/ my clear & easy to follow steps? Do we model something...& make it look so easy that it might be embarrassing if others don’t 'get it' right away?" /2
A lovely reflection on folding laundry, teaching division & "figuring out what Ss already know & determining how to build, connect, generalize & solidify [&] finding ways to make Ss’ thoughts & ideas visible & accessible to others for investigating, revising & sense making." @jsandford.bsky.social
https://jsandfordmath.ca/2025/08/31/lessons-in-laundry/"How
Instead of going "in order" the work focuses on: related sets (doubles, then doubles +/-1 or x5 and x10) over time, using what you know (& writing hints based on it), tracking "facts I know" & "facts I'm still working on" & big ideas like whether order matters or how to break up numbers. /2
"The goal is to help Ss connect the facts they’re working on to ideas they already know, provide a lot of support as Ss begin working on a fact family, & gradually pull back & ask Ss to retrieve facts from memory."

While it looks different, Inv 3 designs work w/ the facts in much the same way. /1
The latest excellent post from @dylanpkane.bsky.social ... how to incrementally help Ss learn multiplication facts, without timing them (much potential harm w/out clear benefits) & comments on how AI helped/didn't help prep the practice sheets.
#iTeachMath #MTBoS
substack.com/home/post/p-...
Incremental Fact Fluency
Sorry, I can't think of a better name
substack.com
"Schools still serve as a filter for the maths & math-nots. We still cast too many kids as capable/incapable of math learning at multiple levels. I’ve had countless ppl tell me 'I wish I had someone like you teach me b/c I would've gotten it' or" I didn't get why math mattered until I was an adult.
About how much are these counters "worth"? How do you know?
In #MathsToday I did this as a starter on estimation.

With the aim of getting pupils to consider which counters are the 'significant' ones.