Wrong reasoning compounds. Math CoTeacher finds the misconceptions hiding behind your students' correct answers and tells you exactly what to do about it in your lesson tomorrow.
Your spidey-sense says that they are following steps without understanding why. But your pacing guide has little flexibility and you don't have the time for one-on-ones with each of them. Even if you did, you would burn out trying to differentiate every lesson. You're in an impossible position.
When a student gets the answer right, the instinct is to move on. Here's what that misses that your new Math CoTeacher (MCT) catches:
"Thirteen years in the classroom. MAP, iReady, IXL could all tell me my students were behind. None understood why, or could help me close the gap. So I built something that does."
Mark · Founder, Math CoTeacher · 13 years teaching from K to 6th grade
I want Math CoTeacher to work for every last one of your students. Our tools only work through our teachers, so if you sign up for early access, I'll work with you as directly as you'll let me to make sure your students succeed and you have what you need to help them get there.
Math CoTeacher runs 1:1 diagnostic math interviews, extracts evidence of misconceptions, and turns it into insight that it injects directly into your curriculum, pacing guide, and lessons.
Pick a topic. MCT generates a short conversation that digs beneath right and wrong answers to uncover how each student actually thinks.
Takes you about 2 minutes to set up.Each student completes their interview on their own time. MCT maps their reasoning: what's solid, what's fragile, and what's missing entirely.
Students spend 5–10 minutes. You spend zero.Open your dashboard before class. See which students need what. Get a specific suggestion you can use in your next lesson.
Ready before your first period."I don't have time to learn another tool."
There's nothing to learn! Pick a topic, assign an interview, check your dashboard. If you can use Google Classroom, you can use this. Plus it will integrate with your actual curriculum so when Math CoTeacher gives you insights, they'll be in a format you're already familiar with.
"Is this just an app that makes things up?"
Math CoTeacher is built on Arithmetic to Algebra, a clinical assessment framework used for over a decade with proven results. It doesn't guess. It follows the same structured interview protocol a trained specialist would use, and every analysis traces back to what the student actually said.
"Will my district approve this?"
Student data privacy is being built into Math CoTeacher as a foundational and enduring requirement. We're happy to work with your admin team during early access to address compliance needs.
"Does it work with my existing curriculum?"
Yes. MCT integrates directly with your curriculum. The insight it gains about your students today can show up directly into your lesson plans tomorrow. All without you lifting a finger. Math CoTeacher can also work with students independently on practice, remediation, or enrichment.
Follow one student's hidden misconception from interview to your morning dashboard.
Jaylen, a 5th grader, gets the right answer. Watch MCT's interview uncover the fragile reasoning underneath. The kind that breaks in 7th grade.
What Ms. Thompson sees at 7:15 AM before first period. Ready to use, no interpretation needed.
What Jaylen's mom receives that evening. A clear picture of how her son thinks.
Each takes 2–5 minutes. No account needed.
Whether you're a teacher, parent, administrator, or just someone who cares about math education, we'd love to hear from you.