R. Flock
My daughter struggles in math and since starting Mathnasium she is more confident and is showing she is unders...
See more reviews here




R. Flock
My daughter struggles in math and since starting Mathnasium she is more confident and is showing she is unders...
See more reviews hereOur 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 Oconomowoc 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, both in-center and online, 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
Mathnasium’s specially trained math tutors work with students across the 53018, 53036, 53058, 53066, and 53069 zip codes. We proudly serve families throughout Oconomowoc and nearby areas, including:
Specially Trained and Caring Team
Jenna Riesterer
Center Director
My name is Jenna Riesterer, and I’m so excited to step into the role of Center Director at Mathnasium of Oconomowoc! I’m originally from Menomonee Falls and graduated from UW–Madison with a degree in Marketing and a minor in International Business. My studies gave me a strong foundation in math and analytics and a real appreciation for how math shows up in everyday life.
When I’m not at Mathnasium, you’ll probably find me reading, running (I’m currently training for the Lakefront Half Marathon), checking out a concert or musical, or traveling. An all-time favorite trip of mine was a semester abroad in Milan, Italy, a time I still love talking about whenever I get the chance.
I’m truly excited to get to know all of you and your amazing families. It’s an honor to be part of a team that helps students grow in confidence and thrive in math!
Teddy Legler
Assistant Center Director
Hello, my name is Teddy Legler and I am thrilled to be the Assistant Center Director for the Oconomowoc and Hartland Mathnasium centers! I was born and raised in St. Louis, Missouri but my grandparents lived in Wisconsin so I’ve been around Madison and Milwaukee a bunch over the years (and I’ve been a Packers fan my whole life). I graduated from Truman State University with a degree in Mathematics and a minor in Studio Art. In my free time I enjoy reading, playing volleyball, hanging out with my cat, and listening to music. I love math and am super excited to help students understand and enjoy it as much as I do!
Derek Pipkorn
Owner
Hi! I'm Derek, the Owner of Mathnasium of Oconomowoc. I also own Mathnasium centers in Brookfield, Hartland, Mequon, Waukesha, and Wauwatosa - yes, I love Mathnasium! Prior to becoming a Mathnasium owner, I worked as a Middle School Math Specialist in the Mequon-Thiensville School District. I previously taught elementary and middle school students in Milwaukee Public Schools and the West Allis-West Milwaukee School District. I have a Masters of Educational Leadership from Cardinal Stritch University and a Bachelors in Middle Childhood - Early Adolescence Education with math emphasis from the University of Wisconsin-Milwaukee. I've been actively involved in math organizations at the State and National level. I was the Chair of the Classroom Resources Committee for the National Council of Teachers of Mathematics and on the Board of Directors for the Wisconsin Math Council. I have taught and tutored children of all ages, and I am committed to bringing a love of math to all children in our community. Married to Jillian and dad to Lucy & Ellie, I love staying active in the community and enjoying all that the Greater Milwaukee area has to offer.
Jillian Pipkorn
Director of Marketing
Hello! I'm Jillian, the Director of Marketing and Community Outreach for six Mathnasium locations in the greater Milwaukee area that my husband, Derek, and I own -- Brookfield, Hartland, Mequon, Oconomowoc, Waukesha, and Wauwatosa. I am thrilled to be a part of our growing Mathnasium team and love the impact that we are making in children's lives and our local communities. I enjoy making connections in the community with schools, kid-centric organizations, and other small businesses. (Let's connect if you fall into one of these groups!) I am a graduate of Indiana University with a degree in Marketing, and prior to joining Mathnasium spent 12 years developing Marketing Strategy at Kohl's. I also have years of experience event planning and fundraising for Susan G. Komen as a volunteer in the fight against breast cancer. When I'm not working on all things Mathnasium, I enjoy spending time with my two daughters Lucy & Ellie, being active, trying new recipes from my cookbook collection, and attending musicals.
Angie Cramer
Managing Director
Hello! I'm Angie, Managing Director for the six Mathnasium locations in the greater Milwaukee area, owned by the Pipkorns. I hold a Bachelor’s degrees in Elementary and Special Education from the University of Missouri and a Masters in Educational Leadership from Christian Brothers University and a Doctorate in Leadership from Maryville University. Prior to joining the Mathnasium team, I was a classroom teacher, school principal, district leader, executive coach, mentor, and professional development leader. I love working with our Center Directors and supporting the incredible work happening across this network of Mathnasium centers! When not at work, you can find my husband Steve and I on the ice at the Milwaukee Curling Club, or in the stands cheering on the Bucks, Brewers, Packers, Badgers, or Admirals with our sons Tom and Ben.
Ali Gilbertson
Director of Operations
Mathnasium has been a part of my journey since 2011, when I first became an instructor in high school. Nearly a decade later, I was thrilled to rejoin the company as a Center Director, and now, as Director of Operations, I have the privilege of working with each of our centers to ensure every student has an incredible learning experience.
With over four years on this amazing team, I’m deeply passionate about helping students build confidence in their math skills and discover the fun in math. What I love most about Mathnasium is the relationships we build—watching students grow, succeed, and develop a love for learning is the most rewarding part of what we do!
Our Instruction Staff
Math Instructors (Tutors)
Mathnasium of Oconomowoc's personalized programs are designed to support students at every stage of their math journey.
Young learners in preschool and kindergarten explore early math through interactive, playful instruction designed to develop number sense, spark curiosity, and establish a solid foundation.
We help grades 1–5 students master fundamental skills—addition, subtraction, multiplication, division, fractions, decimals, and percents—while building understanding and confidence needed to succeed in the classroom.
Our tutors prepare middle school students for success in classes like Prealgebra and Geometry using personalized plans that make complex ideas understandable. We help students feel prepared and capable.
High schoolers receive personalized support for rigorous courses, including Algebra, Trigonometry, and Precalculus, along with focused preparation for PSAT®, SAT®, ACT®, and other college admissions math assessments.
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
Mathnasium of Oconomowoc is located at 1456 Olympia Fields Drive in Oconomowoc, WI.
We proudly serve students from Oconomowoc and the surrounding communities. Local schools we support include:
Oconomowoc Area School District (Oconomowoc High School, Nature Hill Intermediate, Silver Lake Intermediate, Greenland Elementary, Ixonia Elementary, Meadow View Elementary, Park Lawn Elementary, Summit Elementary)
Stone Bank School District
Kettle Moraine School District
Adeline Montessori, Holy Trinity Lutheran, Lake Country Classical Academy,
St. Jerome Parish School, St. Matthew's Lutheran, St. Paul's Evangelical Lutheran
Yes, Mathnasium of Oconomowoc offers both in-center and online tutoring. All students receive live, face-to-face instruction from our caring tutors, no matter how they attend.
No, whether attending online or in-center, students receive the same quality of live face-to-face instruction. Online students receive the same personalized learning plans and caring support from our specially trained tutors as those in the center.
Our caring, specially trained tutors work with elementary, middle, and high school students of all skill levels looking to learn and master any K-12 math class and topic, including Algebra, Geometry, and Calculus.
Mathnasium provides premium value math tutoring by combining superior learning experience with an efficient structure that keeps costs low.
There is a flat enrollment fee for our program, and students attend regularly—much like a gym membership.
We recommend that they attend Mathnasium 2-3 times per week as attending less frequently will slow results and attending too often could lead to student burnout.
Pricing varies by program and geographic area. Contact us at [email protected] for more details on enrollment packages.
No. Membership pricing is the same whether students attend online, in person, or a combination of both.
Each student is given a diagnostic assessment that pinpoints their strengths, knowledge gaps, and unique goals, so that we can create a personalized learning plan that will put them on the best path to math mastery.
Unlike a math class, Mathnasium teaches to the individual. Our expert instructors provide face-to-face instruction at the right pace for each student.
We use The Mathnasium Method™, a proprietary teaching approach which combines personalized learning plans with mental, verbal, visual, tactile, and written teaching techniques to build math knowledge upon what students already know and expand their mathematical thinking.
Using this approach, our tutors teach for understanding, helping students enhance their critical thinking and problem-solving skills so they're able to retain what they learn and gain confidence along the way.
We empower students of all skill levels to excel in math, whether they are looking to catch up, keep up, or get ahead on their math journey.
We work with advanced students to expand their math skills and help them achieve their greatest potential. At Mathnasium of Oconomowoc, advanced students can explore the topics beyond their school’s math curriculum and receive personalized support to achieve their unique academic goals.
If a student is struggling or simply looking to keep up in their math class, Mathnasium of Oconomowoc will build upon what they already know, addressing their learning gaps and teaching math in a way that makes sense to them.
Mathnasium of Oconomowoc welcomes students from all educational backgrounds, including public, private, charter, and homeschool programs.
Homeschooling families love our flexible scheduling options and personalized programs that can adjust to their unique learning goals.
Yes, our Oconomowoc math tutors will set aside the time during each session to help students with their homework.
No. All learning occurs under the efficient and effective guidance of our trained tutors.
Yes, Mathnasium of Oconomowoc helps students get ready for math on standardized tests such as state exams, the SAT®, PSAT®, and ACT®.
Our program combines targeted practice with problem-solving strategies, as well as confidence-building support, so students perform their best on test day and beyond.
We are so confident that you'll love Mathnasium that we offer a 30-Day Satisfaction Guarantee!
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1456 Olympia Fields Drive
Oconomowoc, WI 53066
| Call: | (262) 599-5815 |
| Email: | [email protected] |
Mon
2:00PM - 6:30PM
Tue
10:00AM - 12:00PM + 2:00PM - 6:30PM
Wed
2:00PM - 6:30PM
Thu
10:00AM - 12:00PM + 2:00PM - 6:30PM
Fri
10:00AM - 12:00PM
Mon
2:00PM - 6:30PM
Tue
10:00AM - 12:00PM + 2:00PM - 6:30PM
Wed
2:00PM - 6:30PM
Thu
10:00AM - 12:00PM + 2:00PM - 6:30PM
Fri
10:00AM - 12:00PM
| Mon: | 2:00PM - 6:30PM |
| Tue: | 10:00AM - 12:00PM + 2:00PM - 6:30PM |
| Wed: | 2:00PM - 6:30PM |
| Thu: | 10:00AM - 12:00PM + 2:00PM - 6:30PM |
| Fri: | 10:00AM - 12:00PM |
| Mon: | 2:00PM - 6:30PM |
| Tue: | 10:00AM - 12:00PM + 2:00PM - 6:30PM |
| Wed: | 2:00PM - 6:30PM |
| Thu: | 10:00AM - 12:00PM + 2:00PM - 6:30PM |
| Fri: | 10:00AM - 12:00PM |