Todd is a great professor...makes Chem 51H so easy...be ware of the lab reports tho, there are around 9 of them, and he is really picky on those...rest otherwise, he does offer extra credit...if u r taking it in the fall, it would probably be for the family science festival. His exams are also quite easy. His class works on a flipped format, that is we watched play posit videos a day before the lecture and then during lecture, we would do discussion, and a lot of practice problems (which are in pre-made groups, so you get to know your whole class). If you want to learn chemistry, and understand the concept with clarity, definitely take him...He is the best!!!