A coherent, problem-based TK–12 curriculum designed to help all learners know, use, and enjoy mathematics.
Access IM Math v.360 for free through AccessIM, or explore official IM Certified® print and digital options—reviewed and approved by Illustrative Mathematics®—through an IM Certified curriculum distribution partner.
Find IM Math v.360 for your grade band
IM Math v.360 is the latest version of IM Math. It builds on IM’s problem-based instructional model and includes updates shaped by feedback from educators.
Explore each grade band to see how the curriculum is structured, what students will learn, and the materials available to support instruction.
Independently reviewed. Rated all-green.
IM Math v.360 holds all-green ratings from EdReports across every gateway for every grade band from kindergarten through high school.
As an independent nonprofit, EdReports evaluates instructional materials for alignment to standards and other indicators of quality, helping educators make informed curriculum decisions.
Measurable results, by design
Districts implementing IM Math with aligned professional learning and support have shown real, measurable gains in math proficiency.
LOS ANGELES UNIFIED SCHOOL DISTRICT
+3–4 months
LA schools using IM Math outperformed similar schools in math growth.
An analysis from Leanlab Education found LAUSD schools using IM Math gained an additional 3–4 months of math learning compared with their peers.
NYC PUBLIC SCHOOLS, DISTRICT 11
+24.8 pts
District 11 saw a 24.8-percentage-point gain in math proficiency.
Math proficiency in grades three through eight rose from 25.8% to 50.6% between 2022 and 2025, nearly doubling the share of students scoring proficient.
What’s in IM Math v.360?
A coherent path, TK through Algebra 2
A full sequence of units for every grade level, where students revisit core ideas in new contexts and at increasing levels of complexity.
Lessons built for discussion
Tasks and instructional routines designed for classroom discussion and collaborative problem-solving.
Support built in, not bolted on
Embedded supports for English learners and students with disabilities, including math language routines and UDL-aligned guidance.
Assessment tied to student thinking
Unit assessments, session checkpoints, and lesson cool downs built into every unit.
See problem-based instruction in real classrooms
These are real IM Math lessons, filmed in real classrooms with real students and teachers, so you can see what problem-based instruction actually looks like at different grade bands.
Kindergarten
A kindergarten class makes sense of a new math idea together through play and discussion.
Grade 5
Grade 5 students work through a problem together, comparing strategies and justifying their thinking.
Algebra 1
An Algebra 1 class makes connections across ideas before the teacher guides a synthesis.
Fluency built on understanding
IM Math is designed so conceptual understanding and procedural fluency develop together, each strengthening the other. Students learn why a method works while they learn to use it, and build speed and accuracy through practice that’s built into every unit.
Daily routines build fact fluency. Distributed practice—returning to key skills over time instead of drilling them once—strengthens automaticity while freeing up working memory for harder problems. In middle school, practice sets deliberately revisit problem types from earlier units, so retrieval stays active rather than fading between topics. Students learn the standard algorithms, and they learn why they work, so fluency holds up over time instead of fading after the test.
That’s what coherence looks like in practice: students build understanding and fluency together, with the curriculum reinforcing both over time. The result is stronger, more durable learning.
THE TAKEAWAY
In IM Math, conceptual understanding is how procedural fluency gets built, and why it lasts.
Built by mathematicians and educators
Illustrative Mathematics began in 2011 at the University of Arizona. Dr. Bill McCallum, a lead writer of the Common Core State Standards for Mathematics, and Dr. Kristin Umland, a fellow educator and mathematician, set out to design high-quality math tasks and make them freely available to every teacher. Demand grew quickly, and by 2017 that early work had grown into a complete, standards-aligned curriculum.
IM became an independent nonprofit in 2013. Today, more than 3.6 million students across all 50 states learn with IM Certified curricula.
2011
Founded at the University of Arizona
2013
Became an independent nonprofit
3.6M
Students learning with IM Certified curricula today
Get IM Math v.360 for your school or district
Access IM Math for free
Access the complete IM Math curriculum online at no cost, including full lessons, printable PDFs, and implementation resources.
Explore enhanced print and digital options
Explore professionally printed materials, enhanced digital platforms, and implementation support for IM Math.
Need help choosing a path?
Tell us what your school or district needs, and we’ll help you identify the right option.
