Welcome to mathnasium of Lake Country
Welcome to mathnasium of Lake Country

Greg is amazing to work with and the kids love him and this program!


We love going to Mathnasium! Greg is a great manager both on the business side and with the kids. He is flexib...


Contact us

Lake Country

  • 600 Hartbrook Drive
  • Hartland, WI 53029
  • Call (262) 287-0937

Click here to schedule an Assessment now!
Or click here to have us contact you!

Check out reviews from real parents at Mathnasium of Lake Country!

Hours of Operation

Instructional Hours

Mon 3:00PM - 7:00PM
Tue 3:00PM - 7:00PM
Wed 3:00PM - 7:00PM
Thu 3:00PM - 7:00PM
Sat 10:00AM - 2:00PM

Office Hours

12:00PM - 3:00PM
12:00PM - 3:00PM
12:00PM - 3:00PM
12:00PM - 3:00PM
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Now enrolling for our Summer Program which begins June 12th!

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Hello! I'm Greg Mutsch, Center Director of Mathnasium of Lake Country, your neighborhood math-only learning center in Hartland. We help kids in grades K-12 understand math by teaching the way that makes sense to them.

We specialize in math-only instruction with a focused, caring, and fun learning approach that delivers results.
We proudly serve local communities and schools, including:

  • Hartland, Pewaukee, Oconomowoc, Waukesha, Merton, Delafield, Nashotah, Chenequa, Sussex, and the surrounding communities
  • Arrowhead High School
  • Hartland Lakeside School District (Hartland North Elementary, Hartland South Elementary, North Shore Middle)
  • Kettle Morraine School District (Cushing Elementary, Dousman Elementary, Magee Elementary, Wales Elementary, Kettle Morraine Middle & High)
  • Oconomowoc School District (Greenland Elementary, Ixonia Elementary, Park Lawn Elementary, Summit Elementary, Meadow View Elementary, Nature Hill Intermediate, Silver Lake Intermediate, Oconomowoc High)
  • Pewaukee School District (Horizon Elementary, Pewaukee Lake Elementary, Asa Clarke Middle, Pewaukee High)
  • Swallow School District



One-on-One Assessment

Our unique assessment pinpoints what each child already knows and what they still need to learn.


Customized Learning Plan & Goals

Our detailed plan takes your child step-by-step from where they are to where they need to go.


The Mathnasium Method™

Our proprietary curriculum and teaching method fosters skills that take hold and build upon one another.

Latest News & Posts

Fun Ways to Celebrate Pi Day (3.14)

Mar 14, 2022 | Lake Country Blog

Why do we make such a big deal out of pi? Because pi is a big deal. This irrational number that begins with 3.14 and goes on forever helps us understand so much about our universe. We first learn about pi when measuring circles, but pi is also used to tal..

The Month of Giving at Mathnasium

Dec 12, 2021 | Lake Country Blog

It’s no secret that we have a pretty stellar Rewards program at Mathnasium! As students make progress on their customized math learning plans, they earn Rewards Cards that can be redeemed for items both small and large ranging from snacks, Squishmallows a..

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