Foundations
The masterclass on how children actually learn number. Free, no card needed.
Foundations of
Mathematical Thinking
A Masterclass for K-6 teachers. 7 short video lessons that help enrich how you teach math and how your students understand it.
Everything you need
to teach math conceptually.
No new curriculum. No extra prep. Just a few foundational shifts that change everything.
7 Video Lessons
15-20 minutes each. Watch at your own pace, on your own schedule.
~2 Hours Total
Finish in one afternoon or go lesson by lesson. It's up to you.
Knowledge Checks
Quick quizzes after each lesson to reinforce what you've learned.
Free Forever
No catch. No credit card. Lifetime access to all course materials.
Teaching math is different than how we learned it.
Most of us learned math through memorization and drills. But that's not how students learn best. This course teaches you the methods that actually work, so you can help every student finally understand math.
Three simple steps.
No complicated platform. No overwhelming content. Just focused, practical learning.
Watch Short Videos
7 lessons, 15-20 minutes each. Watch at your own pace, whenever it fits your schedule.
Test Your Knowledge
Quick quizzes after each lesson to reinforce learning and check your understanding.
Use It Tomorrow
Apply what you learn immediately in your classroom. See the difference right away.
Key missing chapter
from teacher prep.
Three modules that build on each other: from cognitive foundations to classroom practice.
Laying the Foundation
Give every student the cognitive tools they need to thrive in math. Before a single worksheet is passed out.
Learn the surprisingly simple signals that determine long-term math success, and how to teach for them.
Use foundational methods to prepare young minds for math, boosting attention, retention, and engagement.
Turn confusing problems into clear visuals to help students finally understand what's really happening.
Teaching That Sticks
Discover what most teacher prep programs miss, and what decades of research reveal about how students learn math.
Master the art of teaching both why and how. Build lasting understanding without sacrificing speed or skill.
Show students how math fits together by teaching the deep structure beneath the surface.
Practice That Builds Confidence
Reinforce understanding and surface gaps using smarter, research-backed routines.
Embrace misconceptions before they happen and connect understandings, strengthening learning.
Watch breakthroughs
happen.
Real teachers. Real classrooms. Real moments of transformation.
"I never thought I'd love teaching math. Now it's my favorite part of the day."
"The structure and conceptual results have been incredible for my kindergarteners."
"Working with DMTI has completely changed how I approach math instruction."
Loved by teachers
and administrators.
What teachers say after seeing DMTI transform their students.
"Before, math was my least favorite subject to teach. Now, it is most definitely my favorite!"
"This is the best math PD I've ever experienced in my 16 years of teaching!"
"I wanted to share my math ISAT percentage with you. 73%! That's over 20 points higher than last year!"
"I have taught math in several states now, and I found this to be one of the most innovative in terms of stretching our mathematical thinking."
"If I had been taught math this way I think I would have loved it and actually been a math teacher."
"I went from 30% proficient at the beginning of the year to 79%. The special education teachers were amazed at this growth."
You're doing everything right.
So why don't students get it?
Most training tells you what to teach. But students need to know how math works. That's what this course unlocks. You'll see why so many students are left behind, and how a few small shifts can change everything.
Become the math teacher
they never forget.
If you're not LOVING teaching math, this course is for you. Free forever. No credit card required.
Frequently Asked
Questions.
How long does the course take?
Is it for a specific grade level?
Are the ideas too advanced for my students?
Is this just another theory course?
Why is this course free?
Or start with $21/mo full access →
Meet Dr. Jonathan
Brendefur.
Jonathan Brendefur, PhD, is an award-winning mathematics educator, researcher, and speaker who supports teachers daily in helping students build mathematical understanding, confidence, and enthusiasm for learning.
Want to talk?
Ready to transform
your teaching?
You could finish the course in one afternoon. It's free forever, and it works.
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