D. M. Vuksa
John, center director is absolutely awesome! He is kind, patient, understanding and very much involved in kids...
See more reviews here




D. M. Vuksa
John, center director is absolutely awesome! He is kind, patient, understanding and very much involved in kids...
See more reviews here
For high-achievers who are ready for the next level, Mathnasium Plus takes students beyond grade-level math and builds advanced thinking that creates lasting advantages.
Our Results
94%
Math Skills
of parents report an improvement in their child’s math skills and understanding.
93%
Attitude
of parents report improved attitude toward math after attending Mathnasium.
90%
Success
of students saw an improvement in their school grades.
Our Results
The Proof Is In The Numbers
Math Skills
of parents report an improvement in their child’s math skills and understanding.
Attitude
of parents report improved attitude toward math after attending Mathnasium.
Success
of students saw an improvement in their school grades.
Mathnasium’s specially trained tutors in Franklin, WI, use the Mathnasium Method™, our proprietary teaching approach that combines personalized learning plans with proven teaching techniques to develop solid foundations for math mastery.
We build upon what the student already knows, addressing their unique learning needs and increasing knowledge level by level.
Our caring, specially trained math tutors provide face-to-face instruction in a supportive and engaging learning environment. We work with students of all skill levels to help them achieve math mastery.
Watch the video to discover how Mathnasium tutors helped Malachi become more confident in math.
Each Mathnasium student receives a personalized learning plan that considers their current skill level, knowledge gaps, and academic goals. Combined with our teaching approach, the plan is designed to help the student truly understand, master, and enjoy math.
Discover how Mathnasium helped Maddie transform her math skills. Initially struggling with the lowest math grades in her class, Maddie worked with our tutors using a personalized approach tailored to her specific needs.
Math Tutors Near You
We specialize in math-only instruction with a focused, caring, and fun learning approach that delivers results. We proudly serve the communities and schools in and near Franklin, including:
Specially Trained and Caring Team
John DeMastri
Academic Coordinator
Hello! I’m John Academic Coordinator at Mathnasium of Franklin. I’ve loved working with kids and supporting learning ever since my very first job in high school as a teacher’s assistant at a daycare. Today, I get to bring that same passion to the amazing students and families here in Franklin.
I studied Physics and Philosophy at Northeastern University in Boston, and one of my favorite parts of working at Mathnasium is helping students understand not just how to solve a problem, but why it matters. Watching a student’s confidence grow—and seeing math click in a deeper way—is the best part of what I do. That’s why I believe so strongly in the Mathnasium approach: it turns math from a struggle into something students can truly enjoy and feel proud of. Outside the center, you might find me at a local concert, playing chess, or relaxing with my dog and a good book.
Fun fact: Before joining Mathnasium, I worked at Fermilab researching how stars and galaxies age—so if your child loves space, we’ll have plenty to talk about!
John Osborne
Owner
Hi, my name is John Osborne, and I’m the Co-Owner of Mathnasium of Franklin. I first discovered Mathnasium as a parent—I enrolled my son, hoping it would help him build confidence in math. What I didn’t expect was how much he loved coming here. The reward system, the caring instructors, and the fun, game-based approach made math feel exciting instead of overwhelming. Seeing that transformation firsthand is what inspired me to become involved in Mathnasium and bring that same experience to more families in our community.
Outside the center, I work in finance. I’m a CFA charterholder with an MBA from the Kellogg School of Management, a BS in Business Administration (with a minor in Mandarin Chinese) from the University of Richmond, and a certificate in Quantitative Data Science in Finance from Stevens Institute of Technology. But the title I’m most proud of is “parent”—and I bring that perspective into every decision we make at Mathnasium.
Fun fact: I lived and worked in Shanghai for four years, and I love sharing stories about it with students who are curious about the world!
Students can take 3 easy steps to enroll at Mathnasium.
All students begin their Mathnasium journey with a diagnostic assessment that pinpoints what they already know and what they still need to learn.
FAQ
The best way to see if we are a good fit for your child’s needs is to visit our center, meet the ...
Schedule Free Assessment
Has Mathnasium made a positive impact in your child's life? Want to shout it from the rooftops? L...
Contact Us
When more than one of your children enroll at Mathnasium, we waive additional enrollment fees and...
Contact UsKnowledge Hub
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Sep 10, 2025
7740 S. Lovers Lane Rd, #430
Franklin, WI 53132
| Call: | (414) 982-3717 |
| Email: | [email protected] |
Mon
3:00PM - 7:30PM
Tue
3:00PM - 7:30PM
Wed
3:00PM - 7:30PM
Thu
3:00PM - 7:30PM
Sat
10:00AM - 2:00PM
Mon
3:30PM - 7:30PM
Tue
3:30PM - 7:30PM
Wed
3:30PM - 7:30PM
Thu
3:30PM - 7:30PM
Sat
10:00AM - 2:00PM
| Mon: | 3:00PM - 7:30PM |
| Tue: | 3:00PM - 7:30PM |
| Wed: | 3:00PM - 7:30PM |
| Thu: | 3:00PM - 7:30PM |
| Sat: | 10:00AM - 2:00PM |
| Mon: | 3:30PM - 7:30PM |
| Tue: | 3:30PM - 7:30PM |
| Wed: | 3:30PM - 7:30PM |
| Thu: | 3:30PM - 7:30PM |
| Sat: | 10:00AM - 2:00PM |