Official Website for past REGENTS EXAMS
Top 10 Educational Websites of 2017 for Math
10 Best Math Tools for High School Students
Wolfram MathWorld – the web’s most extensive mathematics resource
Corbettmaths – videos, worksheets, practice questions, etc
Khan Academy – lessons, videos, and questions in many subjects
SMILE PROGRAM MATHEMATICS
WIRIS CALC opens the exploration of the mathematical universe to you
MathBitsNotebook online Common Core Resources
CoolMath lessons and games
Common Core Math the official pages with videos, handouts, instruction
Math Professor Sal Gambino’s website
Coursera Math and Logic – take courses online
The BIG LIST Best websites for teaching and learning Math
For a good geometrical insight for multivariable calculus – Math Insight