Founder of the Russian School of Mathematics, a leading organization in math after-school education in the USA.

Principal of SchoolNova, an academic enrichment program designed to provide the opportunity for motivated students ages 3-16 to learn more deeply in the areas of mathematics, science, languages and visual arts. School Nova holds its classes on Stony Brook campus of the State University of New York (SUNY).

Professor of Math. in the Mathematics Dept. at Massachusets Institute of Technology, Chief Research Advisor / Math Track Faculty Coordinator in MIT PRIMES.

Professor, Department of Mathematics, Stony Brook, PhD in Math from Yale University.

A professional teacher, principal of an award-winning K-12 math program.