Our Team at Mathnasium of Raleigh Hills

Joanne Boling

Joanne earned her B.S. in Electrical Engineering from Oregon State University and spent 10 years in the field before choosing to focus on raising and homeschooling her children through high school. 

She now brings that wealth of experience and passion for teaching to Mathnasium. Joanne loves seeing students light up when they realize they can succeed in math. Helping them build confidence and initiative is what makes her work incredibly rewarding.

Nadine Ferguson

Nadine joined Mathnasium in early 2022 while pursuing her degree in Mathematics from Portland State University. In December 2024, she completed her degree after publishing a thesis on reforming math education—an area she's deeply passionate about. 

She loves working with students of all ages and believes the best part of Mathnasium is watching students discover a love for math. Nadine is dedicated to helping students feel successful, capable, and confident in their learning.

Eddy Crouser

Born and raised in Portland, Eddy graduated from Portland State University with a Masters of Science in Mathematics in 2021. After graduation, Eddy started working at Mathnasium in order to help students better understand the underlying workings of math. From computer science to physics, Eddy loves to learn and share how math works behind the scenes in every facet of life. In addition to tutoring, Eddy is studying to become a designated member of the Society of Actuaries.

Zach Valentine

Zach’s passion for teaching began in college, where he served as a teaching assistant all four years while earning his B.S. in Mechanical Engineering from Oregon State University. After eight years in project engineering, Zach joined the Mathnasium of Raleigh Hills team in winter 2023. 

He finds working at Mathnasium more fulfilling than any other position he's held. For Zach, nothing compares to the moment when math "clicks" for a student—it’s why he shows up every day ready to make a difference.

Sophia Kremer

Sophia started working at Mathnasim in April of 2024. She is currently pursuing a Bachelor of Science in Mathematics at Portland State University and acquired her Associate of General Studies in August of 2024. Sophia has had a connection with math her entire life and enjoys being able to share such passion and knowledge with others. She enjoys interacting and connecting with all of the students that attend Mathnasium and hopes to contribute to their confidence and self-assuredness both in and out of the classroom. 

Ryan Schwab

Ryan grew up in Forest Grove, Oregon and started working at Mathnasium of Lake Oswego in the summer of 2019 while finishing his B.S. in Mathematics along with a Minor in Computer Science at Portland State University. He has since started teaching at Mathnasium of Raleigh Hills. Ryan has always had a love for teaching others and found a great opportunity to pass along his knowledge to others at Mathnasium. He finds great joy in finding new ways to explain things, in the easiest ways to understand, and in the most interesting way possible. He strives to give students the best experience that he can and always looks forward to meeting new students.

Lia Muller

Lia first came to Mathnasium at the age of six and continued her weekly visits for nine years. She started working at Mathnasium in 2023 during her first year of high school and has enjoyed watching kids gain confidence in their math and learning skills through the Mathnasium curriculum just as she did.

Daniel Siebenaler

Daniel has had a lifelong passion for math, and acquired a BS in Mathematics at Oregon State University before coming to work at Mathnasium. Joining the Raleigh Hills team in August of 2024, Daniel found Mathnasium to be a perfect place for him to share his love of math with others. At Mathnasium, Daniel enjoys both watching students learn to love math and continue to love math as they learn.

Hana Wong

Lauri Puttman

Evan Bohart

Gillian Rutten

Alaska Rosenfeld

Alaska joined the Mathnasium team in October of 2025. Fascinated by math from her earliest childhood experiences, she has continued to develop her skills and enjoyment of math and is currently working towards her IB Diploma at the International School of Beaverton. At Mathnasium, Alaska aims to share her love of math to help students develop their own appreciation, confidence and positive outlook on this beautiful subject!

Jocelyn Hylton

Jovin Banga

Ben Liefeld

Ben started working at Mathnasium in February of 2024 in order to get first hand experience with teaching math to others. He has always found the subject both fascinating and rewarding, and loves being able to share it with others. During his senior year at Beaverton High School he took both AP Calculus and AP Statistics which continued to fuel his connection to mathematics. Throughout high school he found that he enjoyed being able to help his peers to understand and progress through their math classes. This sparked his desire to become an actual high school math teacher, which is still his career plan. He has been taking classes at Portland Community College since high school, and plans to attend the University of Oregon in the fall and work towards a degree in Mathematics.

Hans Atteberry

Hans joined Raleigh Hills Mathnasium in November 2023. He graduated from University of Oregon with a Bachelor’s of Economics and is currently pursuing a Master’s of Computer Science from Portland State University. Using math and number sense, Hans likes to help students find and utilize strategies that make sense. Hans has a passion for helping others learn and reach their full potential. 

Jack Sturman

Sam Bechtol

Bruce Withycombe

By owning a Mathnasium franchise, Bruce has come full circle back to the joy of mathematics and problem solving that lead him to earn a Bachelor of Arts in Mathematics from Lewis & Clark College. In addition to studying Math while in college, Bruce played Varsity Football, earned extra money as a Math Tutor and was involved with student politics. After graduation he studied Actuarial Science at Georgia State University and began a career in the Pension and Retirement Plans Industry, working with consulting firms and insurance companies in that capacity. An opportunity to work in healthcare consulting moved Bruce into the Health Services Industry, where he most recently worked with WebMD Health Services as National Account Manager. Outside of Mathnasium, Bruce has 3 school aged children, which keeps things very busy with school, music, and athletic events. Bruce has spent many seasons as a youth basketball coach, and in his spare time works as a musician, playing in multiple bands in the Portland area including Ural Thomas & The Pain (uralthomasandthepain.com) , Jujuba (jujuba.org), the Goodfoot All-Stars and the WayDowns (thewaydowns.net). Bruce is a member of The Portland Horns, who have played with national touring acts such as The Decemberists, The Violent Femmes, Spoon, Bobby Bare Jr, The Next Waltz and many others. His discography includes credits with Ural Thomas and The Pain, Jujuba, The Decemberists, Kathy Walker Band, NRVS LVRS, Jerry Joseph & the Jackmormons, Casey Neil & the Norway Rats, Point Juncture WA, Kory Quinn and a host of others. Bruce is very excited to be opening mathematical doors using the Mathnasium method of developing number sense. He feels strongly that math skills are not only important from a technical standpoint, but also as a solid foundation of logic and problem solving skills that is not only relevant, but crucial to success in many disciplines.