By the Illustrative Mathematics team The gains in math achievement experienced by District 11 in New York City Public Schools (NYCPS) are not the result of a sudden shift or a one-year initiative. They reflect years of deliberate, system-level work focused on...
in the classroom
Reenvisioning Classroom Observations
Dec 17, 2025
Catherine Castillo, Sr. Specialist, Implementation Enablement Claire Neely, Sr. Specialist, Implementation Enablement “Both rigorous performance evaluation and frequent formative feedback are important building blocks for promoting a strong teacher workforce. Mounting...
Transforming Teacher Beliefs Through a Curriculum-Based MathLab
Nov 19, 2025
By Anita Crowder, PhD, Senior Director, Impact Research and Jennifer Wilson, EdD, Senior Director, Implementation Enablement Adopting a problem-based instructional model offers both opportunities and challenges for educators. How do we respond when teachers say, “But...
The Role of Revision in Math Class
Oct 22, 2025
By Courtney Ortega, IM Certified® Facilitator Learning takes time. Students make connections, deepen their understanding, and address misunderstandings. Along the way, it can make the learner feel vulnerable. “When we learn, we actively work to make sense of an idea...
Building a Math Community with IM K–5 Math
Sep 11, 2025
By Tabitha Eutsler, 3rd Grade Teacher “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.” This was my conversation with our math coordinator after my first few days of teaching IM K–5...
Reintroducing the IMplementation Reflection Tool
Aug 29, 2024
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 IM Certified® Math. With research-backed...
Annotate and Acknowledge
Aug 9, 2024
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 her students they would have a minute to...
Getting Ready for 2023–2024 Back to School: Getting to Know Your Curriculum
Aug 22, 2023
By the IM Team And just like that, school is back in session! Whether you are implementing the IM curriculum for the first time or getting a fresh start as you experience year two or three, the beginning of the year is the time to establish norms that create the...
Getting Ready for 2023–2024 Back to School: Building a Math Community
Jul 26, 2023
By the IM Team As summer winds down, we understand that you are not rushing toward the finish line of your summer break. Hopefully, there have been many lazy days, trips or adventures, and time spent with family and friends. Maybe you’ve enjoyed quiet time alone and...
Collaboration Rather Than Competition: Creating Collaborative Classrooms Through Illustrative Mathematics
Jun 23, 2023
By Eric Partridge, IM Certified® Facilitator I don’t have many memories from elementary school. The one memory I have from elementary math is from playing Around the World. The object of this game was to answer a multiplication fact faster than your opponent. The...
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