Welcome to Mathnasium of Happy Valley

I've rated Mathnasium at a 10 in the beginning of our daughter's math journey and we are currently in Year 2 a...


Wonderful Director who is compassionate and patient.


Contact us

Happy Valley

  • 8974 SE Sunnyside Rd, #B
  • Clackamas, OR 97015
  • Call (503) 908-2778
  • Text 503-908-2778

Hours of Operation

Instructional Hours

Mon - Thurs 2:30PM - 7:00PM
Sun 1:00PM - 5:30PM

Office Hours

Mon - Thurs
10:00AM - 7:00PM
12:00PM - 6:00PM
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arrow Alert!

Summer instruction hours begin the week of June 19th and will end after Labor Day. During that timeframe instruction will begin at 10:00am to 2:30pm only on Tuesday and Thursday. All other days will stay the same.

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Hello. I'm Robin Colbran, Owner of Mathnasium of Happy Valley, your neighborhood math-only learning center. We help kids in grades 2nd-12th 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:

  • Milwaukie
  • Happy Valley
  • Clackamas
  • Damascus
  • Boring
  • Gladstone
  • SE Portland

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

Robin Colbran
Robin is the owner at Mathnasium of Happy Valley. Prior to opening her Mathnasium center, Robin owned and ran two succesful businesses. She has a Bachelor of Science in Business Administration with a concentration in Small Business Entrepreneurship from Sonoma State University. Having struggled with(...)



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

George Dantzig: The Father of Linear Programming

Jun 27, 2023 | Happy Valley

George Dantzig, the Father of Linear Programming, revolutionized the optimization field. His groundbreaking work in the mid-20th century laid the foundation for solving complex problems efficiently. His contributions continue to impact industries worldwide, improving decision-making processes and driving innovation. Let's read more in this blog.

FISH Are Geometry In Motion

Jun 21, 2023 | Happy Valley

Exploring the relationship between math and fish patterns not only unveils the beauty of nature's design but also opens up new doors to understanding the underlying principles that govern our world. So, let's dive together into this mesmerizing realm where numbers and patterns meet the enchanting world of fish!

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"I've rated Mathnasium at a 10 in the beginning of our daughter's math journey and we are currently in Year 2 and still rate it at a 10! :)"

— Z.M.

Happy Valley

8974 SE Sunnyside Rd, #B

Clackamas, OR 97015

United States