Official Twitter feed for Illustrative Mathematics—open resources, professional services, and community for math educators. #LearnWithIM
Joined November 2011
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📣 ICYMI: Our latest blog post explores how student-led play in IM® TK Math builds mathematical thinking, language, and social-emotional skills, all at once.
Why does protecting time for play matter? Read “Play Is Not the Opposite of Rigor.” knowim.org/blog
#IMBlog
What does it take to improve math achievement? @EastHartfordPS started with a shared vision for instruction, then adopted IM® Math. By 2025, grades 3–8 achievement was ~0.6 grade levels above its 2019 baseline. Learn what made the difference: knowim.org/blog
#IMBlog
🎉 Congratulations to IM cofounder Dr. Bill McCallum on receiving NCSM’s 2026 Ross Taylor/Glenn Gilbert National Leadership Award!
Thank you, Bill, for continuing to inspire our work toward a world where all learners know, use, and enjoy mathematics. 💜
#NCSM2026 #LearnWithIM
🎉 Tomorrow at #NCTM2026: IM’s Jennifer Wilson & Timesha Brooks present SlowMath: Looking for and Making Use of Structure.
Come see tasks that put students’ ideas at the center.
Be sure to add it to your NCTM schedule:
🗓️ Oct 29 | 2:30 p.m.
📍 Bluebird Ball 2A
See you there!
No worksheet? No exit ticket? So where’s the math in student-led play?
It’s in the problems students solve, the ideas they share, and the thinking teachers observe and deepen through thoughtful questions.
Read more in “Play Is Not the Opposite of Rigor”: knowim.org/blog
Courageous conversations don’t happen by chance! 👏
Thanks to everyone who joined IM’s Brea Steele and Cherelle McKnight at #NCSM2026 to explore strategies for navigating conflict, building trust, and fostering meaningful team collaboration.
#LearnWithIM
📊 In IM classrooms, multilingual learners don't just participate—they reason, revise, and engage deeply with math.
👀 See for yourself in our latest IMxBlog post. Two educators share strategies that build problem-solving skills and strengthen language → knowim.org/ML
Rigor isn’t about making tasks harder. It’s about meaningful thinking.
In IM® TK Math, play is where transitional kindergarten students create, compare, reason, and revise. Join the conversation! Read “Play Is Not the Opposite of Rigor”: knowim.org/blog
#IMBlog
💬 Before teams can have courageous conversations, they need the capacity to disagree well. Join IM at #NCSM2026 to practice protocols for navigating conflict productively.
Building the Foundation for Courageous Conversations
Tues, Oct. 27 | 9–10 a.m. | Directors Row I
🙌 It’s almost conference week!
The IM team is on our way to Denver for #NCSM2026. Come say hello at booth 427, October 26–28—we’d love to hear what’s happening in your schools.
Rumor has it there will be swag. 👀
#LearnWithIM
🧱 “Your tower is taller than mine.”
In a TK classroom, that’s a math conversation.
The newest post in our blog series, The TK Year, looks at how play & rigor work together in IM® TK Math. Read “Play Is Not the Opposite of Rigor.” knowim.org/blog
#LearnWithIM #IMBlog
✨ What happens when students look for structure in an expression, an equation, or a diagram? Join IM’s Jennifer Wilson & Timesha Brooks at #NCTM2026 for SlowMath: Looking for & Making Use of Structure.
Oct. 29, 2:30 p.m.
Bluebird Ball 2A
Not attending? Tag a colleague who is!
Supporting fluency development requires more than isolated drills or intervention blocks.
That's why we created our Fluency Hub of free resources:
📘Fluency Development e-book
🎥Videos
📝Blog posts
➕Practical supports
Check it out: knowim.org/mathfluency
🏫 In Dover Middle School, consistent IM® Math routines mean students spend less energy figuring out how class works and more energy thinking mathematically.
📣 ICYMI: Catch up on the district's story today: knowim.org/blog
#IMBlog #LearnWithIM
🗣️ Join us at #NCSM2026, where IM’s Brea Steele and Cherelle McKnight will share protocols for coaching teams to navigate conflict productively.
Don’t miss this session!
Building the Foundation for Courageous Conversations
📅 Tues, Oct. 27 | 🕐 9–10 a.m. | 📍Directors Row I
🎒 Packing for #NCSM2026? Add booth 427 to your list.
Talk IM® Math, problem-based instruction, and how the IM Certified® ecosystem helps districts build coherent math programs. Plus, grab some merch. (Pro tip: the socks go fast. 🧦)
October 26–28 in Denver. #LearnWithIM
"It really is a tool for professionals." Dover School District's Director of Curriculum, Instruction, and Assessment on why IM® Math earns teachers' trust: It's structured without being scripted.
📖 Read the full story: knowim.org/blog
#IMBlog #LearnWithIM
Middle school math teachers in Dover School District (NH) had the mindset. IM® Math gave them a curriculum built around it—a coherent progression designed for the discourse and collaboration they'd spent years developing.
📖 Read Dover's success story: knowim.org/blog
📣 The IM team is headed to #NCSM2026 in Denver, October 26–28!
Stop by booth 427 to talk IM® Math, professional learning, coherent math programs, and find out what’s new at IM.
See you in the Mile High City! 🏔️
#LearnWithIM
Rolling dice, sorting buttons, spotting patterns—in transitional kindergarten, that’s the mathematics.
📣 ICYMI: Our new blog series, The TK Year, starts with what makes this year unique. Read it & subscribe to our blog so you never miss a post: knowim.org/blog
#IMBlog
