About Us

Lexington Singapore School offers after-school K-12 math enrichment classes using the Singapore math methods. Besides in-person classes in Massachusetts, we also offer online remote classes.


What is Singapore Math

Singapore Math is a general term to describe the math instruction designed by Singapore’s Ministry of Education. Recent successes in International Mathematics and Science Study (TIMSS) and Program for International Student Assessment (PISA) in 2015 and 2019 demonstrate the effectiveness of the teaching methods.

Strong visualization

One huge appeal of Singapore Math is the use of pictorial representations. Students are introduced to concepts in a three-step approach, Concrete-Pictorial-Abstract (C-P-A) representation.

Problem Solving

At the heart of the mathematics framework from Singapore is problem solving, where students apply higher-order math skills to logic reasoning and challenging problem solving.

Academic Programs

We offer in-person and remote classes for all grade levels year round.

After School

Math Classes

Students meet once a week in-person at our centers or online via Zoom



Team classes participate in Regional and National Math Competitions


Summer Classes

Fun introduction to Singapore math and prep-classes for Fall

Qualified Teachers

Our Teachers

Our Teachers are recruited based on their teaching experience and caring personalities. Our students and parents consistently mentioned teachers as the main reasons they love our program!

  • Lavanya Vabai


  • Yen Truong


  • Nathalie Gruet


  • Arianie Keeney


  • Matthew Ogle


  • Janet Keefe


  • Vernon Roque


  • Noelle Mellouk


Lavanya Vabai


Lavanya Vabai has a Bachelors Degree in Mathematics and Post Graduate Diploma in Mathematics. She also holds a certified degree in Montessori Early Childhood issued by the American Montessori Society and Master’s in Education from Gordon College, Massachusetts. Lavanya has been teaching Montessori Curriculum for last 7 years and strongly believes analytical skills can be imparted to all children through solid mathematical learning. She enjoys teaching and always gets fascinated how fast children can learn new concepts. Her hobbies include cooking different cuisines, enjoys music, movies and spending time with family.

Yen Truong


Yen Truong is from Quincy, MA and graduated with a Bachelor Degree in Education from Ashland University. Mr Yen holds two MA mathematics teaching licenses (grade 1-6 & 8-12). From 2009-2017, he has lived and taught in France, United States and Taiwan. Mr Yen speaks Vietnamese, English, French and Chinese and his multi-lingual skills and love for exploration have enabled him to travel all over the world. During his free time, he likes to play the piano.

Nathalie Gruet


Nathalie Gruet graduated from Wellesley College with a degree in Economics and Political Science. Her endless curiosity and enthusiasm for learning are contagious across the classroom. Through its beauty, abstractness, simplicity, and visuality, she enjoys presenting Math as an art form to her students. She enjoys creating a space where students feel comfortable to be creative in their problem solving strategies and ask questions. She deeply believes that Math can be (and is!) fun and most importantly, that with practice any individual can develop a mastery of.

Arianie Keeney


Arianie Keeney is a Communications and Marketing professional in Winchester, MA. Arianie began her career as a teacher with the Ministry of Education, Singapore prior to pursuing a career in journalism in the USA. Arianie has written on international affairs, politics, government, education, and culture, in the Greater New York City area, and worked in online, radio, and broadcast journalism, in Houston, Texas. Arianie has also lived in Dubai, United Arab Emirates for ten years, where she was a Communications, Marketing, and Engagement Director, managing organizational operations, community engagement, digital marketing, and events management within the Dubai Classical Music scene. Arianie’s third culture upbringing from Southeast Asia – Singapore, Thailand, and Indonesia, as well as extensive living around the world as a third culture child and adult shape her view of the world today. Arianie credits her education of the Singapore Math curriculum for instilling her children with a strong foundation of Mathematics.

Certified Teacher, Ministry of Education, Singapore.
Master of Art in Diplomacy, International Conflict Resolution
Norwich University – Graduated with Magna Cum Laude.
Bachelor of Science in Political Science
University of Houston – Graduated with Magna Cum Laude.
Bachelor of Art in Communications, Broadcast Journalism, Photography, Film & Digital Media
University of Houston – Graduated with Magna Cum Laude.
Diploma in Education, English Literature, Art Theory, Digital Media
Nanyang Technological University, National Institute of Education, Singapore – Graduated with Distinction.

Arianie is the recipient of the Texas Association of Broadcasters Belo Corporation Scholarship 2003/2004, the George Kirksey Scholarship 2002/2003/2004, the Houston Press Club Scholarship 2003/2004, the Maxine Mesinger Houston Chronicle Scholarship 2002/2003 and a member of the Golden Key International Honour Society and the Phi Beta Delta International Scholar Honor Society.

Matthew Ogle


My name is Matthew Ogle. I attained a bachelor’s degree in business from California State University San Marcos. I have 5 years of experience teaching middle school math including few months teaching in Vietnam. I am certified to teach middle school math for the state of Massachusetts. I am currently teaching 5th and 6th grade at Upton District. It’s important for me to not only teach the students how to compute the math but for them to understand what they are doing. I want the best for my students and I want them to pursue their path on mathematics with an open-minded.

Janet Keefe


Janet Keefe has a Bachelors Degree in Mathematics from Assumption College and a Minor in Elementary Education. She has a diverse background teaching children of all ages from Grade 1 to Grade 12 Calculus. During her college years, she worked at Nelson Place Elementary School in Worcester, MA as a Teachers Assistant aiding Elementary classes in all areas, including children with ABA, Autism, and Non-Verbal learning challenges.
Janet likes to make the classroom experience fun, including virtual learning, by engaging students to show their work, working as a team, and on occasion bringing in her guitar! She currently works full time doing Marketing as her other passion and skill set. When she has free time, Janet enjoys skiing and snowboarding. Janet is currently attending Graduate School, at Babson College in Wellesley, MA, looking to obtain her Babson MBA in Entrepreneurship and Marketing.

Vernon Roque


Vernon Roque is from Los Angeles, California and received his Bachelor’s Degree of Science from the University of Southern California in Electrical Engineering. After finishing university, Vernon began his engineering career working for T-Mobile and continued his career with Panasonics Avionics Corporation.

After 4 years as an Engineer, Vernon decided to pursue a lifelong dream of his and traveled throughout South America where he would live in Colombia and teach English as a foreign language. Vernon has been teaching for 5 years. With his profound knowledge in mathematics and experience teaching children of varying ages, Vernon is able to blend effective teaching with a fun environment in order to create a class that is conducive to learning. Vernon believes that class is more enjoyable when class is well organized and interactive. For this reason, he finds Lexington Singapore School a perfect fit for him. He agrees with the school’s methods and philosophy.

Fun facts: Vernon enjoys playing jazz, bossa nova, and some classical music. He also can speak Spanish and a little bit of Portuguese 🙂

Noelle Mellouk


Ms. Noelle holds a BS. and a MS. in education from her home country and is pursuing a second BS. in Mathematics in Massachusetts. She has experience teaching and tutoring middle school, high school and GED mathematics for more than 10 years and is also a math tutor at a state university. Ms. Noelle has been teaching with the Singapore mathematics curriculum and hopes to transfer her passion about mathematics to every student.

Our Centers

We currently have two centers in the greater Boston area.

Lexington, MA

Acton, MA

Lexington MA

19 Muzzey St,
Suite L40,
Lexington, MA 02421.
United States.

Acton MA

271 Great Rd,
Suite 26,
Acton, MA 01720.
United States.