Middle/High School Math Teacher, Physics Teacher
Mr. Lekhtsiyer is an experienced teacher and researcher with a background in mathematical and theoretical physics. He has taught high school and college courses in Physics (General and Theoretical) and Mathematics (Pre-algebra, Algebra I and II, Pre-calculus, Geometry, Trigonometry, Statistics, and Calculus I and II) for 14 years. He has worked as a Math and Physics teacher at the Camden High School, Multi-Cultural Academy Charter School, Delaware Valley High School, Tanner Elementary School and Boys’ Latin of Philadelphia School.
Mr. Lekhtsiyer has developed software-accompanied textbooks in Physics and Mathematics: Physics (College Physics by Serway and Physics for Scientists and Engineers by Serway, Saunders College Publishers, 1996) and Mathematics (Functions, Statistics, and Trigonometry, Scott and Foresman Publishers, 1997, and Pre-Calculus and Discrete Mathematics, Scott and Foresman Publishers, 1998). In 2006 Mr. Lekhtsiyer received a citation of excellence from the House of Representative of Commonwealth of Pennsylvania for teaching in PA school district.
High School Math Teacher
Mrs. Ash is highly qualified Math and Computer Science teacher. She has over 19 years of experience in teaching. From 1977 to 1996 Mrs. Ash taught Math and the Fundamentals of Computers to seniors in high school. She taught in a high school designed specifically for academically gifted students in Kiev, Ukraine. She developed courses at the college level, for example Advanced Calculus for college students. She also, supervised workshops in Algebra, Geometry, Trigonometry and Computer Fundamentals.