Welcome to Mathnasium of Klahanie

Friendly environment and good instructor. My daughter really like it.

Zhujun Wang

They are very kind and well organized. Feedback also good!! Awesome!

Kyungsun Kim

Free Assessment

Schedule a free assessment to find out how your child is doing in math.

Schedule Free Assessment

Contact us


  • 4546 Klahanie Dr SE
  • Sammamish, WA 98029
  • Call (425)651-6558
  • Text (425)651-6558

Hours of Operation

Instructional Hours

Mon 4:30pm-7:30pm
Tue 4:30pm-7:30pm
Wed 4:30pm-7:30pm
Thu 4:30pm-7:30pm
Sat 9:30am-12:30pm

Office Hours

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We are currently only enrolling K through Algebra 1 students. We are not accepting students in Geometry, Algebra 2, Trigonometry, Pre-Calculus, and Calculus at this time.

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Jadelyn graduated with a Bachelor of Science degree in Molecular, Cell, and Developmental Biology from UC Santa Cruz. For her, teaching math to struggling students is a welcomed challenge and a rewarding experience. She hopes to inspire and motivate, and create successful students.

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:

  • Issaquah
  • Sammamish
  • Fall City

Dedicated to providing the best instruction

Our instructors are enthusiastic about math and specially trained in the Mathnasium Method. They create a caring and encouraging environment where your child will learn and thrive!

Meet the Team gallery1

Instructor Spotlight

Catherine C
Catherine is a senior in high school and has always had an interest in the sciences and math. She enjoys taking an active role in their students' learning through helping them build a strong foundation in math processes. In her free time, Catherine likes to read, watch movies, spend time with family(...)



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

Mathnasium's Covid-19 Protocol

Aug 16, 2021 | Klahanie

As students go back to school and come back into Mathnasium, the well-being of our families and staff continues to be our first priority. We are emphasizing hygiene standards for all students and staff, as well as cleaning protocols with di..

Join our Problem the Week Zoom Meeting on Fridays at 2pm

May 3, 2020 | Klahanie

Join our Problem the Week Zoom Meeting on Fridays at 2pm in May and June, 2020 (open to active Mathnasium students for free)   Do you miss bringing your children to Mathnasium? Do your children miss the instructors and their friends at Mathnasi..

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"Mathnasium helped my student go from a failing grade to all As and improve the overall feelling about math. No more tears at home! The staff (Brittany in particular) make it a fun environment to learn."

— Amy Hammingh


4546 Klahanie Dr SE

Sammamish, WA 98029

United States