Building Your Dream Math Co-Teacher
The path to math success for all students, from an app.
Learn MoreCo-Teacher will be your K-6 math expert that can:
Interview
Your students to see if they are at risk of becoming one of the 3 out of 4 U.S. 8th graders who are not proficient in math.
Instruct
1:1 tailored tutoring to put your students on track for long-term math success.
Inform
Make your every day instruction more accessible and effective with insight from Co-Teacher.
Click the video belowto see a snippet of Co-Teacher in action:
What Teachers and Parents Are Saying
"This framework opened the door for me to learn more math content and to deepen my understanding of how students learn it. I'm more confident and a better teacher because of it."
Cindy, 3rd grade teacher
"My wife and I aren't 'math people' but our son is. We credit so much of that to him building a strong foundation."
James, parent
"This is the missing piece."
Nina, 4th grade teacher
"No more math fights or frustration! This framework uncovered my daughter's reasoning abilities, helped her quickly get back on track, and ended the nightly homework battles."
Ann, parent
I'm Mark Pettyjohn and I'm building the Co-Teacher I wanted as an elementary and middle school math teacher.
Over the past 15 years I learned the power of student interviews.
I learned what questions and follow-ups to ask students to see and understand their reasoning.
I learned what responses to anticipate and what those meant about a student's development.
I learned how to use this insight to help students move ever upwards.
I'm building Co-Teacher to capture this expertise in an app.
Want to join several other schools as design partners?
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