After School Singapore Math Classes

Small Group Classes based on the Singapore math curriculum

Balanced and Rigorous Curriculum

Why Singapore Math

We adopt a balanced math curriculum based on the Concrete-Pictorial-Abstract Singapore math pedagogy. Using strong visualization and modeling, we emphasize Logic Reasoning, Early Algebraic Thinking, and Problem Solving. Our goal is to establish a strong mathematical foundation in our students so that they would enjoy challenging math tasks.


Abstract concept is first introduced using physical, interactive concrete objects, e.g. counting objects


Students use visual representations of concrete objects to model problems, making them easier to comprehend


Students understand concepts at a symbolic level, e.g. using symbols for mathematical operations and algebra

Congratulations to our students on their fine achievement in the CML 2020-2021

Our Grade 4, 5, 6 and 9 teams are Regional Winners in the CML 2020-2021 competition season! Massachusetts is in Region 1, which is our New England region. It includes: CT, MA, ME, NH, VT, RI.

Why Parents and Students Like Our Program

Conceptual Understanding

It is not just about learning algorithms and procedures but understanding why they work.

Problem Solving

Being able to use the toolsets to solve novel multi-step problems you have not seen before.

Small Group Sizes

Group sizes are small to ensure individual attention and class participation.

Qualified Teachers

Caring and experienced teachers that encourage class discussion and support learning.

Find Out More About Our Program

Sign up for a FREE evaluation to see if our program is a good fit!

Lesson Structure

Each week’s lesson consists of two parts:

Foundational Math

Focus on conceptual understanding and procedural fluency. Topics are taught linearly and circled back the next year, promoting deeper understanding.

Problem Solving

Students are exposed to unfamiliar problems every week, requiring them to deeply comprehend the problems and organize to problem-solve.

For my son, the additional reinforcement of math principles that Singapore Math is so important for his memory, processing ability, and math confidence. Ms. Jean is a terrific teachers who my son both respects and genuinely enjoys learning from. I wish she was in his classroom every day!

– Parent of 2nd Grader

We like the small class size, and teachers providing feedback about my child when necessary especially when I can also help, CML problems and meets, the active involvement of the owner Kar Hwee, which has maintained and improved the quality of instruction over the years!

– Parent of 4th and 7th Graders

Love the practical application of math in the problems presented. It’s not just about learning how to compute a calculation, but how to think through what the word problem is asking and how to apply math (and which tools) to the solution.

– Parent of 6th Grader

Our Journey

Our program started in 2015 in our dining room. Over the years, we have build a strong team of teachers and have helped many students build strong mathematical foundation and learn to enjoy math.


In-Person and Remote Classes


Experienced Math Teachers


Happy Learning Students

Sign up

Join Us Today!

Our Teachers

  • Cristina Hulea


  • Pelin Akan


  • Sharon Yee

    Assistant Director

  • Nathalie Gruet


  • Rana Razi


  • Neil Claffey


  • Matthew Ogle


  • Indira Bhupatiraju


Cristina Hulea


In her career, Cristina had the opportunity to explore and apply her learnings in different fields of education – as a tutor for unprivileged students in a learning center, professional development coach for international schools and Leader of SW London Maths Hub where she was responsible for the progress of the Math departments of more than 50 schools in SW of London. The diversity of her career in terms of training, experiences, projects involved and working environment (Europe, Asia, Middle East) contributed immensely to her professional development and she believes she will be a valuable asset in kids’ educational journeys. Cristina is a greatly responsible individual with a good work ethic, always aiming for the highest results for children. EDUCATION Postgraduate Certificate in Education QTS – Qualified Teaching Status in Mathematics Education University of Brighton, UK B.Sc. Mathematics Queen Mary University of London

Pelin Akan


Pelin Akan studied Industrial Engineering at Ozyegin University, Turkey, and she is currently doing a Master of Mathematics Education at Lesley University. She has been working in the education sector as a teacher, counselor, and manager for the past eight years and worked with students of various ages and backgrounds.

She entered the field of Mathematics Education so that she can combine her two life passions: Mathematics and Education. Upon completing her Master’s, she intends to pursue a Ph.D. in Mathematics Curriculum Design.

Sharon Yee

Assistant Director

Sharon Yee followed her passion of teaching by enrolling and graduating from Lesley University with a Master in Education. Prior to that, she earned her Bachelor’s degree from Boston University, and a Master from Bentley College with a concentration in Accounting, Business Administration and Taxation. Sharon is a Mass certified teacher in Elementary Education 1 – 6, Moderate Special Education K-8, and Middle School Math 5 – 8. She currently teaches 7th and 8th grade math. Sharon believes that a student-centered philosophy is where students learn best, when students’ needs guide the teaching approach, and the teacher acts as a facilitator. She lives in Newton and enjoys traveling, walking, playing the piano, and “fiddling” with the violin in her free time.

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.

Rana Razi


Rana Razi has been teaching math at various schools for the past ten years. Prior to switching to the field of education she had worked as an engineer in the Boston area. Her goal is to make math a more enjoyable subject for students. Currently she is working at Boston Public Schools.


Bachelor of Science in Electrical Engineering from Boston University

Master of Arts in Teaching Mathematics grades (5-12) from Western Governors University

Teaching certification for teaching math grades 8-12 in Massachusetts and Oregon

Neil Claffey


Neil Claffey retired in June 2021 after teaching social studies at Nashua High School and Nashua High School South for 32 years, having served as department chair for three years. He taught AP Microeconomics and AP Macroeconomics for 19 years, which gave him an opportunity to hone his math skills. In his AP classes, Neil’s students were taught how to use graphs and other pictorial tools to understand and apply abstract core concepts – experiences that inform his work with the Singapore CPA methodology.

Neil also taught Microeconomics and Macroeconomics at Nashua Community College for several years.

Neil has a M.Ed. from Harvard University and a B.A. in Economics from UNC-Chapel Hill, where he had the pleasure of watching fellow freshman Michael Jordan help win an NCAA Basketball national championship for the Tar Heels.

Neil was elected to the Nashua Board of Education in November 2021. He and his wife have two sons, one of whom is a high school math teacher. He enjoys the outdoors, crossword puzzles, and Kenken.

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.

Indira Bhupatiraju


Indira Bhupatiraju has a Master of Education in Middle School Mathematics from Lesley University in Cambridge, MA. Indira has worked in Elementary/Middle schools as an Instructional Assistant and as a Teacher for more than 12 years. She enjoyed working with both Elementary and Middle school students and she earned a DESE Certification for Elementary and Middle School Mathematics for teaching. She strongly believes that every student can excel in math given right support and guidance by the teacher and enjoys working with children. She is passionate to teach concepts, sets high expectations for students and encourages them to try hard. She is currently working as a Middle School Math Teacher.

Our Center

We are located right in Lexington Town Center, behind the Cary Memorial Library. Street and meter parking is available around the area and in the Town Municipal Parking Lot across the street.


19 Muzzey Street, Suite L40, Lexington MA 02421


Tel: 781-479-2331

Sign Up for a FREE Evaluation

Ready to sign up or have more questions about our Singapore math classes?

Lexington MA

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

Acton MA

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