Professional Development & Resources
A coherent journey through all K-8* math topics. Built on 40+ years of research, validated in classrooms, designed for teachers, with personalized support.
Most districts are not struggling from a lack of materials. They are struggling from a lack of instructional coherence.
DMTI helps teachers strengthen three essential areas that drive mathematics learning.
Concepts, representations, structures, and progressions that help students make sense of math
How students build lasting conceptual understanding and connect new learning
Visual models, purposeful questioning, precise language, and carefully sequenced tasks
Teachers often combine multiple curricula and supplemental resources, with the average teacher reporting using two core curricula and five supplemental resources, according to Education Week's summary of RAND's American Instructional Resources Survey.
DMTI helps schools move beyond simply choosing materials toward building the teacher knowledge and instructional practice needed to improve student understanding.
A flexible approach focused on the most impactful things and consistently building.
Math success begins with teacher knowledge. Start with a free introductory course or explore DMT Insights to see how Math Success by DMTI thinks about mathematics, cognitive science, and instruction.
Free options, no commitment, just a window into the approach.
A short starting point that introduces Developing Mathematical Thinking's approach to mathematics, cognitive science, and instruction. Designed for instructors who are new to the work or those who need a refresher.
Short videos and 3-page research overviews on key ideas behind effective mathematics instruction. Around 50 topics so far, covering fluency, fractions, and more.
Free on dmtinstitute.com, Substack & Facebook.
Research briefs that translate cognitive science into classroom practice. Bite-sized, practical, and grounded in evidence.
Three ways to deepen teacher knowledge, ranging from flexible online learning to in-person workshops and targeted virtual sessions. Standalone or combined into a sequence.
Educational Impact 45-Hour Virtual Course, self-paced, accessible from anywhere.
In-Person Workshops (2–3 days each): Number & Algebra, Measurement & Geometry, Data Analysis: Probability & Statistics.
Specialized Virtual Sessions: Targeted Zoom sessions on fluency, fractions, place value, and more.
Curricular and instructional resources teachers can use right away. Available through a subscription library or as individual downloads.
Resource Library: Replacement units, intervention activities, varied worksheets, diagnostics, games, centers, state-style assessments, story problems, and teacher support documents.
Teachers Pay Teachers: Individual downloads for story problems, assessments, lessons, posters, and classroom documents.
The standard DMTI Partnership is the foundation. Two flexible models build on it to fit different school and district needs.
Outcome: stronger student understanding and achievement over time.
4–10 days/year of lesson studies, unit studies, demonstration lessons, classroom-based coaching, and direct collaboration with teachers and students throughout the year.
The core partnership model. Lesson studies, unit studies, demonstration lessons, classroom-based coaching, and direct collaboration with teachers and students throughout the year.
4–10 days/year · Foundation for all models
Every teacher in a school or district participates together. Lesson studies, demonstration lessons, and coaching reach all teachers, building shared language and instructional coherence across grade levels.
For schools or districts ready to commit every classroom to the same approach.
A small team from each building: a coach or administrator, one primary teacher, and one intermediate teacher, works with DMTI together. The same days cover multiple buildings, accelerating implementation across the district.
For districts wanting to reach more schools quickly with a coordinated team-based approach.
A focused student-facing program that pairs targeted student instruction with teacher coaching. Designed to fit between the school year and the work that follows.
When teachers realize they can connect directly with math learning experts, to ask questions, send photos of student work, discuss lessons, and get full support with their math instruction. Everything changes.
Teachers connect directly with math learning experts. Send photos of student work, ask questions about lessons, discuss instructional approaches. Real support from real people who understand the math and the classroom.
Demonstration lessons, co-teaching, and classroom-based coaching throughout the year. Not a one-and-done workshop; ongoing partnership that builds teacher confidence and skill over time.
Progress reporting that shows the impact. When teachers see their students' growth, and share those results with colleagues, interest and buy-in spread organically across the school.
Year one is realistic. We meet teachers where they are. A few foundational adjustments, not an overwhelming overhaul. Teachers try it, see it working, and want more.
The results speak for themselves. We measure progress and provide reporting that teachers can share. When colleagues see the data, and hear firsthand what the support feels like, they want in.
Teachers discover a level of quality and personalized support they never knew existed. They see the benefit in their students and their classroom. Math becomes their favorite subject to teach.
Behind every DMTI partnership is a team of PhD researchers and master coaches who've spent decades in real classrooms, not just studying math education, but doing it alongside teachers every week.
Led by Dr. Jonathan Brendefur, 20 years training teachers, 40+ years of research, and a mission to make math make sense.
Real results from real classrooms. When teachers get the support they need, students thrive.
"My entire 1st grade class was at grade level by the end of the year!"
"I wanted to share my math ISAT percentage with you. 73%! That's over 20 points higher than last year!"
"Before, math was my least favorite subject to teach. Now, it is most definitely my favorite."
All Math Success by DMTI options at a glance. Costs range from free entry points to multi-year district partnerships.
| Option | Best For | What It Includes |
|---|---|---|
| Free Introductory Course Free | Teachers and leaders new to DMTI | A short overview of the DMTI philosophy and approach |
| DMT Insights Free | Exploring research-based ideas | Videos and 3-page research overviews |
| Resource Library | Teachers wanting classroom-ready resources | Lessons, activities, diagnostics, games, centers, assessments, and support documents |
| Educational Impact 45-Hour Virtual Course | Flexible online professional learning | 45-hour self-paced online course |
| In-Person Workshops | Deeper team learning | 2–3 day workshops with facilitation, modeling, discussion, and planning |
| Specialized Virtual Sessions | Targeted support on specific topics | Zoom sessions on fluency, fractions, place value, or other topics of need |
| DMTI Partnership | Full implementation support | 4–10 days/year of lesson studies, unit studies, demonstration lessons, and coaching |
| All-Teachers Model | Whole-school or district commitment | Every teacher in the school or district participates in the work together |
| Cohort Model | Faster implementation across multiple schools | Coach or administrator + primary teacher + intermediate teacher from each building |
| Summer School | Targeted summer support for students | Four 2-week sessions over 8 weeks; in-person, virtual, or hybrid |
| Teachers Pay Teachers | Individual teachers seeking ready-to-use resources | Story problems, state-style assessments, instructional lessons, posters, and classroom documents |
Choose from three flexible partnership models with transparent pricing.
Research consistently shows that early mathematics skills are foundational for later math learning and are among the strongest predictors of later reading and overall academic success, often surpassing the predictive power of early reading skills.
— Duncan et al., 2007; Nguyen et al., 2021
Let's design a plan that fits your goals, timeline, and budget. Whether you're one teacher curious about a better approach or a district ready for system-wide transformation, we meet you where you are.
Or get started now and enroll for only $21/mo
* 7th and 8th grade practice being added continually, full curriculum available now.