I am Samuel, a Professional Engineer and National Registered Scientist, prepared and passed all the licensing exams by self-study; therefore, I have substantial knowledge accumulation in mathematics, chemistry, and biology. I hold Bachelor's and Master's degree both in Environmental Engineering, with straight A GPA in all core courses. During my scientific works, I realized the importance of effectively and efficiently instructing students in a short period, particularly to those whom with limited background knowledge, such as my clients and newly enrolled teammates. Moreover, through this process, I also know the critical impact of solving p