Introduction: Why do you need a tutor like me?
0. You want a university professor to be your private tutor.
1. You want (or your children) to build up good foundation in natural science, math, engineering, or Finance in order to become a good scientist, engineer, or industrial executive manager.
2. You (or your children) need help to understand these subjects or do homeworks and projects.
3. You want (or your children) to get high score for all kinds of test, including SAT/AP/IB/GRE in all these subjects.
4. You are homeschooling your children and you need a tutor in physical or life science who are knowledgeable enough and know how to teach.