IM Certified® Blog

Maximizing the M in STEAM

Maximizing the M in STEAM

Anita Crowder, PhD, Senior Director of Impact Research Kathleen Whittle, Cofounder Teachineers “The only way to learn mathematics is to do mathematics.” – Paul R. Halmos STEAM (science, technology, engineering, art, and...

read more
Think Pair Share

Think Pair Share

Jennifer Wilson, Senior Director, Implementation Portfolio When teachers are curious about and trust student thinking to drive learning, they create classrooms where students learn mathematics by making sense of problems,...

read more
Reintroducing the IMplementation Reflection Tool

Reintroducing the IMplementation Reflection Tool

By Claire Neely, Senior Implementation Specialist Illustrative Mathematics’ redesigned IMplementation Reflection Tool (IRT) is a powerful, non-evaluative resource intended to shape the way your school adopts and implements...

read more
Annotate and Acknowledge

Annotate and Acknowledge

By Jen Hawkins, IM Certified® Facilitator and Independent Curriculum Implementation Specialist As I sat at the table in the back of the room, I watched the teacher reveal an image connected to the lesson’s warm-up. She told...

read more
Getting Started with IM Certified® Math

Getting Started with IM Certified® Math

By Dr. ​Catherine Castillo, Sr. Specialist, Implementation Portfolio Are you leading IM implementation at your school or district and want to ensure an organized and thoughtful rollout?  With the upcoming launch of IM® v....

read more
Math Successes Multiply with a Growth Mindset

Math Successes Multiply with a Growth Mindset

By Dr. ​Elisabeth O'Bryon, Chief Impact Officer and Co-Founder of Family Engagement Lab and Toka Hussein, K-5 Curriculum Specialist at Illustrative Mathematics Illustrative Mathematics (IM) and Family Engagement Lab (FEL)...

read more
Elements of Problem-Based Teaching and Learning

Elements of Problem-Based Teaching and Learning

By Max Ray-Riek, Senior Director, Teacher Professional Learning Our vision at IM is a world where all students know, use, and enjoy mathematics. Educators in our IM Community work toward this vision in classrooms day after...

read more
IM Kickoff Message for 2024

IM Kickoff Message for 2024

A Look Back and a Look Ahead By Bill McCallum, IM Co-Founder and CEO Hello there, and welcome to 2024! I hope that you have had time to relax and recharge in preparation for all of the excitement that this year will bring....

read more
Cultivating Joy in the IM Classroom

Cultivating Joy in the IM Classroom

By Deborah Peart, Founder and CEO of My Mathematical Mind If we want students to Know, Use, and EnJOY mathematics, it begins with teachers. Joyous math experiences are about more than having fun and keeping students happy...

read more
Unit 9 in IM Grades 6–8: Hidden Gems

Unit 9 in IM Grades 6–8: Hidden Gems

By Lisa Matthews, IM Certified® Facilitator and PL Specialist Team for Grades 6–12 The IM curriculum is so thoughtfully designed and written that even those of us who have spent years with IM often find content that is new,...

read more
The Role of Revision in Math Class

The Role of Revision in Math Class

By Courtney Ortega, IM Certified® Facilitator Learning takes time. Students make connections, deepen their understanding, and address misunderstandings. It can make the learner feel vulnerable. “When we learn, we actively...

read more
Coherence between Grade 8 and Algebra 1

Coherence between Grade 8 and Algebra 1

By Courtney Ortega, IM Certified® Facilitator I was recently in a meeting where a participant declared, “Grade 8 and Algebra 1 basically have all the same standards.” Have you ever wondered this yourself? Have you heard...

read more
Co-Creating an Authentic Math Community

Co-Creating an Authentic Math Community

By Meredith Dadigan Abel, IM Certified® Facilitator It is magical to be in a classroom with a strong math community. In this classroom, the brilliance of all students prevails. Students and teachers share a unanimous belief...

read more
Representations in the Story of Mathematics

Representations in the Story of Mathematics

By William McCallum, IM CEO co·her·ence noun the quality of being logical and consistent. the quality of forming a unified whole. One of the things I am proud of about IM K–12 Math™ is its coherence. This shows up in many...

read more
Counting on Counting Collections

Counting on Counting Collections

By Sara Baranauskas, IM Lead Curriculum Writer, Grade 1 and IM Certified® Facilitator Counting Collections is an engaging and playful mathematical routine that supports and builds students’ sense of mathematical identity...

read more
Help Students Know, Use, and Enjoy Quadratics

Help Students Know, Use, and Enjoy Quadratics

By Joseph Koelsch, IM Certified® Facilitator “I’ve said it before: equations are the devil’s sentences. The worst one is that quadratic equation, an infernal salad of numbers, letters, and symbols.” - Stephen Colbert Did...

read more
Exploring Ratio Reasoning with Student Work

Exploring Ratio Reasoning with Student Work

By Tashana Howse, IM Certified® Facilitator The relationship between fractions, ratios, and proportions is introductory to students' development of the study of Algebra. Therefore, it is important for students to engage in...

read more
The Story of Grade 8 Unit 3: Linear Relationships

The Story of Grade 8 Unit 3: Linear Relationships

By Ashli Black and Elisa Smith Grade 8 is a year marked by shifts in mathematical focus. Where grades 6 and 7 introduce students to negative numbers and using them in operations, grade 8 introduces them to irrational...

read more
Creating Collaborative Math Classrooms

Creating Collaborative Math Classrooms

This blog post was written by William McCallum, co-founder and CEO of Illustrative Mathematics, and originally posted on the ImagineLearning blog. Collaboration is a core value at Illustrative Mathematics. Creating a...

read more
The Story of Grade 4

The Story of Grade 4

By Patti Drawdy and Yenche Tioanda “Why not start the year with place value?” Kaneka Turner, Grade 4 Lead Writer, hears this question often. Isn’t making sense of and operating on large numbers pretty essential in grade 4?...

read more
The Story of Grade 3

The Story of Grade 3

By Mike Henderson As a former grade 3 teacher, I know first hand how daunting teaching math at this level can be. On top of developing fluency with addition and subtraction within 1,000, students need to learn about new...

read more
The Story of Grade 2

The Story of Grade 2

By Mike Henderson Teaching addition and subtraction in grade 2 is a challenging balancing act. As students move from numbers within 100 to numbers within 1,000, they need to use approaches that involve directly representing...

read more
Towards Coherence

Towards Coherence

By William McCallum Last week, we had our first large-scale in-person event in quite a while, a training for new and returning facilitators in Baltimore, with over 110 facilitators and 13 employees attending. I gave a...

read more
The Story of Kindergarten

The Story of Kindergarten

By Alexandra Clayton Many 5 year olds love to tell you (and show you) how high they can count. This skill of rote counting, saying the counting words in the same order each time, is a lot like singing the ABCs . While...

read more
Two Recommendations to Elevate Instruction

Two Recommendations to Elevate Instruction

By Kate Nowak, IM Vice President of Curriculum Development and Portfolio “The more intensely interested a teacher is in a student’s thinking, the more interested the student becomes in his or her own thinking.”—Eleanor...

read more
Math Language Routines: Discourse with a Purpose

Math Language Routines: Discourse with a Purpose

By Dr. Kristen Taylor, IM Certified® Facilitator  Math teachers can talk all day about math! We get super excited when we encounter someone else who enjoys these conversations as well. But too many of our students don't get...

read more
The Story of Grade 1

The Story of Grade 1

By Brianne Durst Grade 1 teachers have the awesome responsibility of introducing their students to, and helping them build an understanding of, the structure of our number system. This is no small task! Just think about how...

read more
A Thread Through Early Algebra 1

A Thread Through Early Algebra 1

By David Petersen, 6–12 Curriculum Specialist andAshli Black, Director, 6–12 Curriculum The Algebra 1 course in IM 9–12 Math™ begins with a unit on one-variable statistics, a choice that many find surprising. Why start with...

read more
Revisiting Distance Learning with IM K–12 Math™

Revisiting Distance Learning with IM K–12 Math™

With the surge of the Omicron variant, many schools are moving back to distance learning. Although we may not be excited to leave our classrooms again, we are better prepared for distance learning this time around. Most, if...

read more
Taking the Long View

Taking the Long View

By William McCallum A few weeks ago, my wife and I took a 17-day rafting trip through the Grand Canyon. We descended through the layers of rock, from the 270 million year old Kaibab sedimentary layer of chert, dolomite,...

read more
In the Beginning: Unit 1 in Kindergarten

In the Beginning: Unit 1 in Kindergarten

By Alex Clayton When was the last time you stepped into an entirely new environment? You weren’t sure exactly what was going to happen. There was no one you recognized. How did you feel: Uncertain? Anxious? Hopeful? During...

read more
Remembering Bob Moses

Remembering Bob Moses

By William McCallum and Kristin Umland "Math literacy will be a liberation tool for people trying to get out of poverty and the best hope for people trying not to get left behind.” —Bob Moses, 1935–2021 Bob Moses, the civil...

read more
Gifts: A Reflection on Student Thinking

Gifts: A Reflection on Student Thinking

By Elham Kazemi, Co-Author of Intentional Talk and Professor at University of Washington  “Gifts from the earth or from each other establish a particular relationship, an obligation of sorts to give, to receive, and to...

read more
Multi-grade Classrooms and  IM K–5 Math™

Multi-grade Classrooms and
IM K–5 Math™

By Jen Hawkins, IM Facilitator and IM K-5 Product Specialist Illustrative Mathematics believes that students can achieve success as mathematical thinkers by working through problems and consolidating their learning through...

read more
Introducing the IM Implementation Reflection Tool

Introducing the IM Implementation Reflection Tool

by Liz Ramirez, Director of Implementation “This makes the expectations for what I need to change visible.” “It’s not about the tool. It’s about the conversation using the tool.” Quotes from leaders who participated in IM’s...

read more
A Love for Math Reignited

A Love for Math Reignited

By Michael Ramirez, Senior Coordinator of School Transformation, Elementary Math When I began school as a kindergartener, I absolutely adored math. As a lower elementary school student, I remember relatives asking me what...

read more
IM K–5 Math: An End and a Beginning

IM K–5 Math: An End and a Beginning

By William McCallum On March 20, 2015, I received the following email: Thank you for submitting your proposals to the K–12 OER Collaborative. We are pleased to advise you that Illustrative Mathematics has been selected as a...

read more
Culturally Responsive Teaching and Math

Culturally Responsive Teaching and Math

By Asya Howlette, Director of Mathematics and Science at Thurgood Marshall Raise your hand if you have been perplexed by professional learning that told you your class needs to be culturally responsive, but left you...

read more
Differentiating Instruction with IM 6–12 Math™

Differentiating Instruction with
IM 6–12 Math™

By Max Ray-Riek, Director of 6–12 Professional Learning In my role at IM, working with teachers and administrators, I am asked to help with the challenges of implementing an IM curriculum. We are often asked, “How can I...

read more
What does it mean to enjoy mathematics?

What does it mean to enjoy mathematics?

By William McCallum When I started this series of blog posts on what it means to know, use, and enjoy mathematics, I thought this one would be the easiest. Math is fun, right? How could you not enjoy mathematics? I...

read more
The Joy of Fluency

The Joy of Fluency

By William McCallum I'm not a very good skier, but I have once or twice in my life experienced the joy of a perfect run: gliding down the slopes, taking each turn with confidence. And I've had terrible runs where I...

read more
A Circumference By Any Other Name…

A Circumference By Any Other Name…

By Becca Phillips You can’t tell a child “there’s no such thing as monsters” because, well, then, why is there a word for it? I was given this advice when my own daughter was an infant, but I’ve thought a lot about it over...

read more
What Does It Mean to Use Mathematics?

What Does It Mean to Use Mathematics?

By William McCallum Our vision at Illustrative Mathematics is a world where all learners know, use, and enjoy mathematics. In my last post I picked up that first verb and talked about what it means to know mathematics. In...

read more
Growing with the IM Community Hub

Growing with the IM Community Hub

By Portia Gibbs Roseboro, Britnee Wright, Justin Brennan The IM Community Hub, affectionately known as “The Hub,” was created to support educators using the IM Curriculum in navigating what teaching looks like now....

read more
What does it mean to know mathematics?

What does it mean to know mathematics?

By William McCallum A world where all learners know, use, and enjoy mathematics. Perhaps the most mysterious verb in the IM vision—a world where all learners know, use, and enjoy mathematics—is the first one: know.  Knowing...

read more
The Nuances of Understanding a Fraction as a Number

The Nuances of Understanding a Fraction as a Number

By Kristin Gray This was originally posted on Kristin Gray’s personal blog, Math Minds, on November 15, 2020. Student work is just the best. It is the one thing that will always motivate me to write! So, let’s kick this...

read more
Reading Graphs is a Complex Skill

Reading Graphs is a Complex Skill

by William McCallum Newspapers are full of graphs, far more than 10 or 20 years ago. Indeed, I have a graph to show that! (Source, Priceonomics) And yet I wonder how often readers see graphs as pictures illustrating a...

read more
Making Sense of Story Problems

Making Sense of Story Problems

by Deborah Peart, Grade 2 Lead Many people have an aversion to word problems. They cringe at the mention of them. In elementary classrooms, teachers often report that this is what their students struggle with most. When...

read more
The Story of Grade 5

The Story of Grade 5

by Sarah Caban From the start of the year, we want students to know they are capable of engaging in grade-level mathematics. In the Opportunity Myth (2018), data shows that there is an opportunity gap for historically...

read more
Planning for the Student Experience

Planning for the Student Experience

by Sarah Caban and Kristin Gray Teachers are so amazing and resilient. Amid all of the many thoughts and feelings about the challenges this school year brings, conversation continually revolves around their students.  When...

read more
Equitable Teaching Practices in IM 6–12 Math

Equitable Teaching Practices in IM 6–12 Math

by Tina Cardone The vision of Illustrative Mathematics is to create a world where learners know, use, and enjoy mathematics. This raises the question: Which learners? And what role do the authors of a curriculum play in...

read more
Coming Together Around Distance Learning

Coming Together Around Distance Learning

By William McCallum I can't imagine what it must feel like right now to be a teacher facing the uncharted territory that is the coming school year. Will I be teaching 100% online, or have some face-to-face interaction with...

read more
Thoughts on the Back-to-School Problem

Thoughts on the Back-to-School Problem

By William McCallum One of the consolations in these difficult times has been tweets and Youtube videos of parents discovering just what it takes to be a teacher. Maybe it takes a crisis like this to restore the respect...

read more
IM Talking Math

IM Talking Math

By Kristin Gray Most importantly, I hope everyone is taking care of themselves, their families, and others as much as they are able to during this time. With schools and districts pushing instruction online with a quick...

read more
Planning for Learning in Spring of 2020

Planning for Learning in Spring of 2020

Some schools are sending home printed packets and establishing teacher office hours by phone. Some are conducting their regular class schedule, but online. And lots are doing something in between. We understand that it is...

read more
Using math to make decisions in today’s pandemic

Using math to make decisions in today’s pandemic

By William McCallum At Illustrative Mathematics, our mission is to create a world where all learners know, use, and enjoy mathematics. This is not just an idle wish, one that we have because we love mathematics. Sometimes...

read more
Links to Resources for Shifting Instruction Online

Links to Resources for Shifting Instruction Online

First and most importantly, take care of yourself, your family, and your students. That might not look like doing math, or it might. To the extent that it’s useful, we have curated this list of resources recommended by our...

read more
Links to Math Resources for Caregivers

Links to Math Resources for Caregivers

Here is a collection of links the content team here at IM has used with our own students and kids to start mathematical conversations, play math games together, explore new topics, come up with projects, and have fun. There...

read more
When is a number line not a number line?

When is a number line not a number line?

By William McCallum The number line is a seemingly simple object: a straight line with two points marked 0 and 1. Those two points are the seeds of great complexity, however. Whole numbers are located at positions marked...

read more
The Art of Reflection

The Art of Reflection

“In times of stress, the best thing we can do for each other is to listen with our ears and our hearts and to be assured that our questions are just as important as our answers.” —Mr. (Fred) Rogers By Kaneka Turner We are...

read more
Ratio Tables are not Elementary

Ratio Tables are not Elementary

By William McCallum In grade 3, as students start to learn about multiplication, they think about products like 6 x 7 in terms of equal groups. 6 x 7 is the number of things when you have 6 groups with 7 things in each...

read more
Learning through Teaching

Learning through Teaching

By William McCallum I was in New Orleans a couple of weeks ago visiting a school using IM 6–8 Math and was inspired by the efforts the school was making to implement problem-based instruction. I saw teachers at different...

read more
Building a Math Community with IM K–5 Math

Building a Math Community with IM K–5 Math

“I’m not sure this is working. Only five of my students are participating and commenting each day. The rest sit there and look at me.” By Tabitha Eutsler This was my conversation with our math coordinator after my first few...

read more
Making Authentic Modeling Possible

Making Authentic Modeling Possible

The first thing you have to understand is that asking people to model with mathematics makes them mad. Not in all contexts, though! At a social gathering with a generally amiable and curious group of people, you might try...

read more
Which Vertex is the Center of a Triangle?

Which Vertex is the Center of a Triangle?

By William McCallum I am sometimes asked what is the secret to the success of our curriculum, what is the special property that sets it apart from other curricula. That question is like the one in the title of this blog...

read more
Building a Supportive Home/School Partnership

Building a Supportive Home/School Partnership

While families arrive with different school experiences and perspectives on what “doing math” means, they often share common questions: What do I need to know to set my child up for success in math this year? and How can I...

read more
Co-Creating Classroom Norms with Students

Co-Creating Classroom Norms with Students

Establishing norms is critical to creating an environment where all students see themselves as knowers and doers of mathematics. Reflecting on the Illustrative Mathematics mission statement, Creating a world where learners...

read more