His teaching method is really really intuitive and straightforward that everyone who fininshed his degree in undergrad can easily follow it. In the beginning stage when I started GMAT, I had no clue how to start and approach. But Mr. Lee online course was the very go to lecture to me. His unique approach to solving math problem set saves a lot of time and helps me develop strategy for time management in the real GMAT exam. In the end, I took GMAT test more than 3 times but my math score never fell down below 49 thanks to Mr. Lee’s lecture so that I was able to solely focus on verbal part. Thus, I strongly recommend this course. Thank you Mr. Lee.