Our Curriculum Team

At RSM, we believe that mathematics is a language learned over many lessons and mastered over many years. We believe that it is impossible to teach a single lesson without a roadmap of how each lesson connects to the next and how the topics covered in each grade and level will connect with the next grade. Our unique curriculum has served as our roadmap and has fueled the remarkable results we've achieved for thousands of students over the last decade and a half.

At every grade and every level, our team of experts sets clear goals for what topics should be taught, in what order, and even the techniques that best allow teachers to explain each topic. In fact, although most members of our curriculum team are highly gifted academics, each of them is first and foremost a teacher at RSM.They use their wealth of experience in the classroom as well as their strong academic background to continuously advance RSM's curriculum.


Nina Dubinsky

Ed.D. in Mathematics Education, Rutgers University
M.S. in Applied Mathematics and Computer Science, Air and Space Institute, Moscow

Nina Dubinksy is an experienced mathematics curriculum developer.  Her professional credits include directing the design of curriculum and pedagogy for Think Math!,  a comprehensive K-5 program.

Over the past two decades, Nina has also taught mathematics to students at almost every grade and level. In addition, Nina has been researching how children approach mathematics. She is excited to bring her academic and practical experience to advance RSM's curriculum.


Sonia Hristovitch

Ph.D., Mathematics Education, Purdue University
M.S., Mathematics, Purdue
B.A., Mathematics, Park College

In addition to being an award-winning teacher with extensive classroom experience at the middle school, secondary, undergraduate, and graduate levels, Sonia is an expert in the field of mathematics curriculum and instruction.  Most recently, she has worked as a principal investigator for the University of New Hampshire to develop a curriculum and methods for New Hampshire teachers to improve middle school mathematics.

Sonia has extensive experience with mathematics education both in the US and internationally, having spent considerable time developing syllabi, assignments, and assessments to coincide with the recommendations of the National Council of Teachers of Mathematics to stress the interactive and discursive nature of mathematics teaching.

We are excited to add Sonia to our dynamic team. She is currently focused on improving the geometry curriculum at RSM that includes a set of topics that are essential for all students but largely absent in many American public schools.


Maryna Yeroshkina

M.S., Mathematics, University of New Hampshire
B.S., Mathematics (with honors), Dnipropetrovsk State University, Ukraine

Maryna has over ten years' teaching experience at the elementary, undergraduate, and graduate levels. Her favorite type of questions do not start with “What?” or “How?” but with “Why?” and she pushes each of her students to develop a deep and lasting understanding of mathematics. She believes that there is nothing more rewarding than to hear her students declare at the end of year: “I love mathematics! Thank you for showing me its beauty!”

At the University of New Hampshire, her graduate studies focused on stable homotopy theories. Both at RSM and in academia, Maryna has worked closely with Nina to 

keep RSM at the forefront of mathematics education in the United States.


Anna Charny

M.S. and Ph.D., Mathematics and Computer Science, MIT

Dr. Anna Charny has had a lifelong interest in teaching advanced mathematics to primary and secondary school children. She has authored many academic publications, contributed to a number of Internet standards, and authored 36 US patents. Her teaching and tutoring experience ranges from elementary to graduate school.

She is a co-founder and the first chairperson of the Board of Trustees of the Advanced Math and Science Academy (AMSA) Charter School in Marlborough, Massachusetts, where she subsequently served for many years on the Board of Trustees.

Anna is a member of RSM's Curriculum Committee as well as a founding partner and Director of RSM-Metrowest. 


Olga Kozlova

M.S., Mathematics, State University of St. Petersburg

When Olga joined the RSM team in 1999, she already had over ten years of teaching experience in a math preparatory school in St. Petersburg. She was attracted to RSM’s approach to education as both a teacher and as a parent. Both of her daughters attended RSM. Olga has taught nearly every grade and every level at RSM. She became RSM’s Director of Education in 2007, working tirelessly to make sure that every class at RSM meets our high bar for quality teaching.


Alex Karezin

B.S. and M.S., Applied Mathematics, Moscow State University

Alex brings an extensive background in content management for science and technology-related areas.  He is responsible for the coordination of the curriculum department and is leading RSM's expansion into the online frontier. He is dedicated to ensuring that our digital content is of the highest quality and that these resources will provide the same excellent education to our students online that our bricks-and-mortar students receive in the classroom.


Laura Wheel

B.S. Mathematics Education, Boston University

Laura has more than 20 years of experience in the field of math education. In addition to teaching high school and college mathematics, she spent many years in the educational publishing industry, where she developed, edited, and wrote content for math programs and textbooks. Though she enjoys publishing, her true love and passion is teaching. Wanting the best of both worlds, in 2010, she searched for an after-school mathematics program. Her search led her to RSM. She was convinced she found the right place when she discovered that the school's philosophy and approach were similar to her own. In 2010, Laura started teaching at RSM, and, in 2014, she joined RSM's curriculum department.

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