I've been teaching mathematics to students since 1980 in Romania and Canada. Most of them acheive 90s in their exams and get accepted into top tier schools like UWaterloo and UofT. Here are some of my works and qualifications.
Author, revisor, and publisher of 3 math textbooks which can be found by clicking on the image above
BSc, Pure Math from University of Iași, Romania
MSc, Math from York University, Canada
Canisius Teacher's College in Buffalo, USA