professor always unprepared, lecture topics seem random, does not grade all assignments and then assigns final grades subjectively, does not show up for appointments

prepare to teach yourself, no structured lectures, i suggest someone else besides this fruit

just dont take it w/ him.... he's horrible

absolute worst teacher I've ever had. Doesn't lecture. Expect to learn ochem by yourself.

He was awsome in 231, but not to awsome in 431... What up with that dude???

he really knows his stuff when he teaches... but oh wait.. he doesn't teach! apparently he feels that u needed to learn ochem on your own and he'll just sit back, show up to class late, answer 2 questions per class and reel in the nice professor paychecks for doing nothing... what a life!

This guy is a complete tenure ****! His job is safe so he doesn't do****. O Chem is hard to start with and you need a teacher to teach you, not to point to the book and say his cute little acronym for B.O.O.K. (Bound Optimumly Organized Knowledge)... use it... His class is a waste of time. If you get him, get a tutor.

Shitty teacher, i usually can deal with crappy teachers, but this guy didnt even teach! He expected everyone to learn 2nd semester Ochem without any lectures at all.

This teacher does not like to teach. You basically teach yourself from the book. Every other lecture is Question day in which he manages to answer about 2 problems. There is no structure to his lectures what so ever.

Horrible Lectures. im not sure if they are even considered lectures. this is a hard class. so dont expect the teacher to make tht much of a difference. dedicate your LIFE to this or else you will do bad. sorry but its true. grotjahn sucked in my opinion. id pass on him being my teacher EVER again. Reji the Chem 231 TA is the best EVER!! love ya rej

of course this is a hard class but Dr G makes it harder! he doesnt even lecture. he covers hardly any of the material we are responsible for and spends most his time for "discussion" which isnt helpful if you dont understand anything.

absolute worst chem professor in SDSU. he cares more about learning his students names than teaching organic chemistry. there are better profs. at SDSU that can do a whole lot better job at teaching o'chem than he can.

I'm not sure what lecture the other students attended, but I must have missed those. This professor teaches, if you want to call it that, by Q&A. You teach yourself the material, he just kind of stands up at the board and makes ridiculous jokes. If you're mindful of your grade, care about actually learning the material, STAY AWAY!Absolute worst!

Cant teach chem very well. I tried so hard to keep up w/the class and read, and studied so much for the tests, but I give up! His lectures are just a huge ramble over 2 peoples weird irrelevant questions, and his tests are not straightforward. I spent over a week studying for an exam and I still failed b/c he asks a lot of trick questions.

horrible professor. has NO idea how to teach the class. he's really random and all over the place. if you take him, prepare to teach yourself the class. the curve is huge so most will pass in the end. avoid taking him if possible!

this class was hard because he doesn't teach much and you have to teach yourself by reading the book. every test is cumulative so stay on top of the reading.his tests are hard but they really help you learn when it comes time for the final.there are always people that throw off the curve.the online wiley homework was a waste of 80 dollars.

As others have said, he's very intelligent, but he cannot teach. If collecting a paycheck via absolute minimum work was an Olympic sport, Douglas Grotjahn would be a gold medal winner year after year. Do NOT take organic chemistry with him, you will learn from the book and TA's than him. He was also gone for a good month of the semester.

I've had MANY horrible professors at SDSU, but I just accept my it and study everything MYSELF (I have a 4.0). I say this because a lot of students complain about teachers when they get bad grades, but that's just THEIR fault for doing poorly. But THIS is diff - LOADS of irrelevant HW and exams that do not reflect the material. WORST PROF EVER.

He doesn't cover much of the material in class because he goes off on some other topic that only confuses you more, let alone the answers he gives which never answer what the question was. All of his powerpoints are from Wiley Plus, and you are forced to get Wiley as well which comes with the book that is way more helpful than he is.

Probably knows what he's talking about but couldn't explain it to anyone if his life depended on it. Lecture is completely useless. Recommend a tutor or you're screwed.

Lecture is absolutely useless. Groddy is undoubtedly smart but there is a certain intelligence in being able to explain a complex subject in simple terms that he does not possess. Best lectures were taught by students in the master's programs. I only got an A because of my tutors.

Avoid taking Organic Chemistry with Grotjahn. His lectures are very unhelpful (I stopped going after exam 2), he randomly assigns a BUNCH of homework with no warning. I read the ENTIRE textbook, worked on homework every day for hours, and essentially sold my soul to this class. Yes, I got an A, but it was so much worse than it needed to be.

Very smart guy but had an EXTREMELY difficult time articulating his thoughts. Didn't do a problem on the board in class until the end of March. Don't take him if you can help it but if you have to READ and get a tutor ASAP!!!!!

I study at SDSU Georgia campus where we don't have an option to pick a professor we'd like to have. So Chem432 is the second class I take with professor Grotjahn. I have to say that he really is a nice person and knowledgeable. but as a professor... if it was up to me I'd NEVER EVER take his class ever again.

Worst professor I have EVER taken at SDSU. People ask him questions and he stands silent and says "the book goes over it. Come to office hours." Super unclear, scattered lecture style. If you can take Bergdahl over Grotjahn DO IT. If you want to do well in this class, the book is your best friend. I have learned more from the book and YouTube.

No joke, worst chemistry professor in SDSU. Cannot explain any concept even if his life depended on it, you pretty much rely on the book because he has a very scattered lecture. You will learn more from watching youtube videos and the only point of going to lecture are pop quizzes.

I had the misfortune of having to "attend" his online lectures from SDSU Georgia campus. The lectures are impossible to watch due to his lacking oratorical skills. The text book we had was atrocious. It felt like someone read an actual chemistry book and wrote a blog-post about it and called it a book. He also did not provide final score grading.

He does try to answer questions but he is so unorganized, the book is horrible and he gave so much HW on wiley (released the week of the exam), on orion, and on BACON. He was gone for more than half the semester and did not communicate with the professors who lectured in his place, his exams were fair, i did khan academy to actually learn something

Don't take him if you have the option of taking another professor instead! He is a very boring lecturer and doesn't answer questions well. His review sessions for exams are confusing. On exams, he expects you to know a lot more than what he lectures about. The textbook sucks!If you really have to take his class, invest in outside review sessions.

He is extremely confusing ! He rushes through lecture. Never has time to answer questions. Instead hell provide some cheap "answer" and waste more time asking if he answered your question than actually taking the time to answer someones question. During office hours everything is recorded so goodluck asking about your grade (everyone sees it)

If I could Id rate this whole deportment w a 0. This professor in particular, while he is admittedly very knowledgeable of the subject, cannot teach to save his life. And his exams are far more difficult than they need to be. And while I know hes not in charge of the lab, there was very little coordination between the two

Horrible teacher, honestly one of the worst if not the worst teacher Ive ever had. His lectures make zero sense as he expects the students to already be knowledge about the subject. Not very helpful with questions as sometimes he doesnt even know the answer. Tests are impossible and there were 5 total including the final. Do not take if possible!