Dear Dr. Li,
Thank you for the time you spent with me today and the information you shared about your class. It was an honor to be able to observe you teaching the math class. You are indeed enthusiastic and an also master at keeping the students interested and participating in learning mathematics. Watching you and the students helped me envision the way the program has been operating with much more clarity than when we discussed it beforehand. I am very pleased with the extremely positive approach you have with the students. I noticed that there were no failures, only successes in your class. I highly approve with that approach to teaching, especially in such a program setting. I observed how you create examples on the whiteboard for students to work at their seats and have them write down their answers so that you can check them. Thank you again for a very inspirational visit to your class.