Mathnasium of Mercer Island
2448 76th Ave SE Suite 101-B
Mercer Island
WA 98040
United States

Customer Testimonials

Report a concern   October 8, 2025 — Rated 10 out of 10 by C.C. Mathnasium of Mercer Island
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It’s only been a month and my daughter is already showing significant improvement and increases confidence! Very happy.

Report a concern   October 6, 2025 — Rated 10 out of 10 by S.U. Mathnasium of Mercer Island
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Mathnasium provided a calm and welcome learning environment for my child. We saw continuous improvement in her math skills and scores in school. The repetitions matter. Mr. G always treated us with kindness and tried to make math fun.

Report a concern   April 8, 2025 — Rated 10 out of 10 by Michelle Cabrera Mathnasium of Mercer Island
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Mathnasium has given my daughter an opportunity to really supplement her math experience from school. I couldn’t imagine another situation where she would be more motivated to spend time on math. She seems to actually enjoy it. A lot of her friends are there and it is great that there is a normalized place for her to be spending time doing math Outside of school! The staff seem great and they give her a really personalized experience. They always call her name when she comes and goes. The material is not necessarily the same as what they are doing at that moment in school, so don’t expect it to necessarily immediately boost grades. Instead, I consider it an opportunity to consolidate math knowledge and skills in the long run.

Report a concern   February 10, 2025 — Rated 10 out of 10 by M.G. Mathnasium of Mercer Island
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Mr G has a wonderful ways with the kids and is very communicative with the parents. Delighted to find a place where my child will willingly go do math! They do a nice job of gamifying and keeping the kids motivated. It also helps to have other kids around doing math too. Highly recommend!

Report a concern   January 20, 2025 — Rated 10 out of 10 by S.G. Mathnasium of Mercer Island
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Great tutors, great format and process.

Report a concern   November 12, 2024 — Rated 10 out of 10 by Vivek Arora Mathnasium of Mercer Island
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After trying a few different math centers, Mathnasium appears to be the one we should have chosen from the beginning

Report a concern   September 2, 2024 — Rated 9 out of 10 by Tamar Heyman Mathnasium of Mercer Island
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We love Mathnasium and the staff is wonderful! Our kids look forward going there and are always in a great mood after their time at Mathnasium. Our kids have really advanced their comprehension math concepts and problem solving

Report a concern   July 22, 2024 — Rated 10 out of 10 by Robert Pong Mathnasium of Mercer Island
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Mr G and his staff are very friendly yet serious about their commitment to helping the kids with whatever their needs are. They provide a very positive environment for after school learning which encourages kids to continue going to the center.

Report a concern   June 27, 2024 — Rated 10 out of 10 by Michelle Cabrera Mathnasium of Mercer Island
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We have only been in Mathnasium for a few weeks, but so far my nine-year-old really likes it. She is doing this for enrichment. She's already a good student and a reasonably good math student. She seems to be motivated to do the work sheets and finds them interesting. It's great because she works at her own level and the teachers so far have been helpful. Mr. G seems extremely dedicated to the center and one telling sign is that I see him calling all the students by name. I also really like that the curriculum is very practical and focused on concepts rather than just memorization. It seems to fit very well into the common core curriculum.

Report a concern   June 17, 2024 — Rated 10 out of 10 by C.Z. Mathnasium of Mercer Island
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Mathnasium has been fantastic for our family. The owner is always present, ensuring a high-quality experience every time we visit. The well-designed worksheets build a solid math foundation, and the point system motivates kids to attend regularly. My child's math skills and confidence have improved significantly. Highly recommended!

Report a concern   February 6, 2024 — Rated 10 out of 10 by Jessica Trufant Mathnasium of Mercer Island
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Mathnasium and Mr. G are awesome! My son’s math skills and confidence have improved tremendously in only one month! The curriculum sticks, and the work doesn’t stress my son out, which is huge! The staff is very attentive and friendly. My son feels very comfortable going in and accomplished going out! I highly recommend Mathnasium, Mercer Island!

Report a concern   December 13, 2023 — Rated 10 out of 10 by Beck Stanley Mathnasium of Mercer Island
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A major bonus is that our son loves going to Mercer Island's Mathnasium. He was behind in math because of being homeschooled so he has gaps in his learning, but thanks to Mathnasium, he is getting caught up and will be ready for 9th grade geometry next year. We are concurrently doing high school algebra at home while he has his learning gaps filled in at Mathnasium. It's a wonderful resource; glad we found it.

Report a concern   November 28, 2023 — Rated 10 out of 10 by Marissa Fitzpatrick Mathnasium of Mercer Island
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Mr G has a very gentle and calm way of teaching and keeping it fun!

Report a concern   October 30, 2023 — Rated 10 out of 10 by L.K. Mathnasium of Mercer Island
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My daughter started mathnasium in third grade and was placed two years behind. Now that she is in 5th grade she is testing at grade level by mathnasium standards and above grade level by her school standards. This program is way better than the iready program used by her school. My son just started this program this year and I’m hoping he will similarly be able to learn math this way as he’s also tracking two years behind grade level.

Report a concern   September 25, 2023 — Rated 10 out of 10 by Meena Somasundaram Mathnasium of Mercer Island
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My kids are more confident and has helped them be successful in school.

Report a concern   September 11, 2023 — Rated 10 out of 10 by K.D. Mathnasium of Mercer Island
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My student is progressing steadily and we appreciate the flexibility in scheduling sessions.

Report a concern   July 17, 2023 — Rated 10 out of 10 by Juan Cotto Mathnasium of Mercer Island
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Our experience with MI Mathnasium has been outstanding. Our son has increased his math ability and confidence each time we have spent time there. We are extremely pleased with this program and will recommend to anyone.

Report a concern   April 24, 2023 — Rated 9 out of 10 by Lauren Katz Mathnasium of Mercer Island
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This program has really helped my daughter learn math. This program works well for children who are self-motivated and have good focus. It also requires a time commitment of 3x/3 hours a week.

Report a concern   April 10, 2023 — Rated 10 out of 10 by Courtney Kinsman-Cordero Mathnasium of Mercer Island
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Mr. G and the mathnasium experience has been a game changer for my kids. They went from hating math to it being their favorite subject. They always look forward to going to mathnasium which is a huge plus!

Report a concern   April 4, 2023 — Rated 10 out of 10 by W.L. Mathnasium of Mercer Island
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Mr. G is great, my son enjoys going to Mathnasium and it's great that he's learning faster way of solving problems than what is taught at school.

Report a concern   February 27, 2023 — Rated 10 out of 10 by Michael Strong Mathnasium of Mercer Island
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My son enjoys going to class, he enjoys math now, and the owner and staff are the best!

Report a concern   February 13, 2023 — Rated 10 out of 10 by M.A. Mathnasium of Mercer Island
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The system to learn math is very effective with my kids and the owner Ms G is really good, supportive, good with the kids and calm.

Report a concern   January 16, 2023 — Rated 10 out of 10 by C.K.C. Mathnasium of Mercer Island
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Mathnasium has been amazing for our kids. They went from disliking math to math being their favorite subject! They are now confident when it comes to math.

Report a concern   December 6, 2022 — Rated 10 out of 10 by H.S. Mathnasium of Mercer Island
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Mr G is amazing with kids learning and teaching there. It of an inclusive and learning environment for kids and that look forward to going there.

Amazing place and great culture and values embarked by Mr G.

Report a concern   November 22, 2022 — Rated 10 out of 10 by Michael Strong Mathnasium of Mercer Island
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This is the first time my son is having fun at learning math. He enjoys the people there, and looks forward to going to class and succeeding.

Report a concern   November 16, 2022 — Rated 10 out of 10 by Chloe Eun Young Choe Mathnasium of Mercer Island
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My kids love the Mathnasium at Mercer Island location!

Report a concern   October 26, 2022 — Rated 10 out of 10 by N.P. Mathnasium of Mercer Island
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My son loves going and has even asked to go more frequently. Builds his confidence and the environment feels warm, supportive, yet challenges him.

Report a concern   October 9, 2022 — Rated 10 out of 10 by C.J. Mathnasium of Mercer Island
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My son with mild learning disabilities was struggling in public school math with mediocre teachers. Mathnasium has been a game changer for him!

Report a concern   October 5, 2022 — Rated 10 out of 10 by Petra Jennings Mathnasium of Mercer Island
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My son is loving Mathnasium! He just started and was doing 3 days and when I asked him if he would like to drop down to 2 days he said no and that he likes going 3 days! They have been able to catch him up on the school he missed last year in record speed and they're now helping him with concepts he's not understanding in his current curriculum. he says that Mathnasium explains the concepts much better than at school!

Report a concern   August 1, 2022 — Rated 10 out of 10 by S.C. Mathnasium of Mercer Island
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Mathnasium has been the best!! Our rising 9th grader is more confident in math. With Mathnasium, we no longer have the arguments regarding studying math or closing the math gaps. Our family highly recommends Mathnasium of Mercer Island.


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