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!

  • Amy Hague


  • Rowena Jimenez


  • Soo Choi


  • Lavanya Vabai


  • Dandan Zhou


  • Sylvia Ogle


  • Ruth Kim

    Teacher/Summer Coordinator

  • Chandan Keshkamat


Amy Hague


Amy Hague earned a B.S in Early Childhood Development and a M.S. in Special Education from Grand Canyon University. She currently lives in Maine with her boyfriend, Sam and their dog, Dino. She is the special education teacher at Manchester Elementary. She has been working primarily with K-5 learners with mild to moderate disabilities and works with various organizations outside of school to support individuals with varying abilities. Amy teaches small group math, reading and writing throughout the day and is also her districts summer school director. Her dedication to teaching students is seen through her drive to connect learning to student’s lives, making it more meaningful. Math was difficult for Amy as a student so helping children understand and enjoy math is a priority.

Rowena Jimenez


Rowena Jimenez received her MA in Urban Policy from Tufts University (focus on education issues). She has taught elementary level students since 2010, and is currently a 4th grade teacher in an Independent School in Boston. Prior to that, she worked as a certified Middle School Math teacher in public schools in Lowell Ma.
Founder and Executive Director of a literacy nonprofit that builds engaged learners and change agents in an underdeveloped nation, Ms Jimenez believes that meaningful knowledge is organic and students of any age learn excitedly and effectively about anything that is of consequence to them. The educator’s role is to facilitate learning by creating an environment that nurtures inquisitiveness and collaboration. She recently finished a 13-week professional development course offered at Harvard called: Teaching and Learning in a Maker-Centered Classroom as part of her nonprofit work in the Philippines. She currently supports teachers in the Philippines offering non traditional learning experiences online for children in poor communities there, including math that’s based on the Singapore math philosophy.

Soo Choi


Soo Choi is an early elementary teacher from New York City. She has a bachelor’s degree in Finance but found working with children more enriching. Therefore, she later attained a master’s degree in Early Elementary Education from Hunter College in New York City. Currently, she is teaching second grade in a New York City public school. She loves working with young learners and strives to make learning engaging for them. Math is a subject she enjoys and works to make math concrete for her students. She is experienced in implementing lessons from various math curriculums and is excited to join Lexington Singapore School. When she is not teaching, she enjoys spending time with her family, savoring a good cup of coffee and hiking.

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.

Dandan Zhou


Dandan Zhou was inspired by her wonderful and caring teachers who made her want to become an educator herself. She studied mathematics and secondary education at the University of Memphis. After receiving her B.S., she taught at a public school in TN before moving to Chengdu, China where she taught for a few years. She experienced first-hand the differences between mathematical education in China and the United States, and became interested in understanding effective teaching strategies and best practices around the world.

Such interests led her to study Applied Mathematic at Northeastern University for her Master’s degree where she completed an independent project analyzing how cultural differences between Chinese and American students affect their mathematical curriculum.  Dandan is certified with Tennessee Professional Teacher License 7-12 and Massachusetts Initial Teacher License 8-12, and currently teaches in a high school in Natick.

Sylvia Ogle


Sylvia Ogle, Ed. M., has 8 years of teaching experience in Middle and High School. Sylvia graduated with a Bachelor of Science in Mathematics from the California State University in San Marcos San Marcos ,CA, and is certified in MTEL – Mathematics (09). She is currently working for Haverhill High School as a math teacher. She believes that every child is good at math and should be given the opportunity to do so. Math is not only an academic subject, yet it is the passion for Sylvia. Therefore, she will explore all different types of methods to help her students to exceed the expectation and become independent thinkers.

Ruth Kim

Teacher/Summer Coordinator

Ruth Kim is from NYC and has been raising her 3 children in the Boston suburbs. As a parent and educator in the public schools, she is constantly studying ways to effectively influence a child’s development through positive challenges and high standards. She believes that hard work and effort, set within a foundation of trust and self-respect are essential components of learning. Ms. Kim was introduced to Singapore Math 10 years ago, during a time of research into various Mathematics programs. She particularly appreciated how Singapore Math validates and builds on the instinctive connection students make with Math concepts. Over the years, Ms. Kim has used Singapore Math skills when teaching her own children and with students who present with various learning profiles. Ms. Kim holds a Bachelor’s degree in English language & Literature from Gordon College and a Master of Education in Moderate Disabilities from Lesley University.

Chandan Keshkamat


Chandan received her Master of Science degree from Goa University, India with top honors and ranking 1st in her college. A devoted mother, teaching is her passion and she loves working with students at all grade levels. She holds Massachusetts Teacher’s License to teach students in Grade 5 to Grade 12 and has been working as Teacher/Substitute Teacher/Exceptional SAT tutor at both public and private organizations such as Neighborhood Charter School-Boston, High Expectations, LLC. Malden, Huntington Learning Center-Waltham and Tutor Doctor tutoring agency.

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.