He's a very fidgity prof, and he likes to give examples of nearly impossible problems--just for fun. He is helpful; he gives weekly homework, but when returned, it shows corrections and explanations.

Is one of the best math profs in the department.

Acts kind of **** which is funny. Gives lots of examples. Lots of homework but is always willing to show how to do the problems.

good teacher, questionable as a man and gives somewhat difficult tests. there is weekly homework but he is always available to help you or answer questions. as he says "i pretty much know every answer in the book"

I question his sexuality, but he makes class entertaining. Who doesnt love his giggles & the chalk on his face? He's a good professor. Could try doing examples of his own cuz he does everything from the book. Weekly homework was easy & the tests were fairly easy as well. Bad w/parital credit though.

Where to begin with this guy. He's a nut. Lots of homework. Prepare to take notes, he likes to put the whole book into notes

Very helpfull always in his office willing to help you. Gives Homework which can be hard at times but does get you ready for the tests and final

He explains everything in full... but he does it in a way that you are completely clueless as to what you could possibly do with this information until the very end of his lecture. At this point you are like "Oh." His tests are what I would call LOADED with algebra and can take up to 2.5 hours.

if you're a smart kid, he's the guy to take, small homeowrk assignments once a week (5-10 problems), but they are hard and he thoroughly grades it too, but the exams are like the homework. He's feminim which makes class funny at times. He will give you lots of help outside of class if you need it, but i wouldnt take him unless ur a smart kid

Great Proff. always in his office to help. Homework can be a little hard at times but he is all ways willing to help you. tests are long but does prepare you for the final and homework is almost 1/3 of the grade

Very willing to help with problems, easy to find in office. Not an easy class and you will have to spend time on homework, but it makes you learn the material well. Overall pretty good.

very helpfull teacher!

SUCH A CREATURE! His class was hilarious because of his chalk-on-the-face habit. Tests were pretty difficult, but the homework never took longer than 30min-1hour. I was never good at math but managed a B.

Really nice guy and try's to help you whenever you need help and go to him but grades very harshly, sometimes unfairly. Possible to turn in homework with all the right answers and work and get a 40/50 for very minuet mistakes

VERY harsh grader. He will take off for just about anything. He gives a lot of homework yet he takes forever to grade it. His tests are way too long and sometimes took 2.5 hours to finish even if you know the material. The math department's calc 3 final was a breeze after taking his tests.

I've never loved a professors personality as much as I love his. He's CRAZY.. but good crazy. I had him for Calc and his tough teaching style prepares you for future classes. If you're lazy, do not take his class. If you enjoy interesting characters, and can look past his insane grading expectations, take him!!!!

Alright professor overall, but i missed class once two days before a test and the next day he went off on me. Also he is a very tough grader.

He is a good teacher but you need to study. I failed my first test, went in and talked with him for the rest of my homeworks and tests and got an A on the final. He wants you to succeed and is very nice, use his office hours because some of the homework is hard. Overall very interesting and he is awkwardly funny.

Good prof. Homework is tough and will make you work, though it prepares you for very similar problems on the test. No quizzes. Quirky guy, but a really nice guy if you get to know him.

He is a little strange at times but kind. Definitely go in and talk to him regularly and often. He is very helpful outside of class. He is a very hard grader! He makes you work for a passing grade but wants you to succeed. Very knowledgeable. Kind of funny in a weird way at times. Wouldn't recommend him, they're better options but he could be worse

This class is going to be rough if you don't take it seriously. He likes to see students actively participating in class, and will point it out if you don't. Tests are going to be impossible to pass if you don't study for them. However, if you put in the time (which is a lot), you will do just fine

Dr. Haertzen is definitely a quirky guy. His homeworks and tests are long (3 hour block exams), but he is a fair grader and gives plenty of partial credit. He also gave a few quizzes. Class was basically doing examples and how processes were derived, so my note book was full. I had him for bothe Calc 2 and 3 , and I would recommend him for both

He is interesting guy. His class is very fast pace so know your speed learning. I'm a slow learner so he was a tougher professor for me. Class work is straight out of book. Exams are long and tough. Exams are based on difficulty of problems and not simply the concepts. Grading is harsh. You may have the right answer but if not done his way, wrong!

I took Professor Haertzen for Calc 2 and for DiffEq. Honestly if you just put in hard work it isn't difficult. I got an A in Calc 2 and my exam average for DiffEq was a 95%. Even with all of his nit-picking at small things, it isn't that difficult to get it right. He just has specific ways he wants things done. He's a very intelligent man.

Not a bad teacher. He gives packets of notes, and printed out homework for you. The notes are very easy to study, and expect everything in the notes and homework to be on the exam. Make sure you do it exactly as he wants it, and never show up late to class.

In all honesty he's a really good professor. At first I didn't like him a whole lot, but you get used to his style. He goes through the formulas and then does a lot of examples. Another thing that's nice is he works right out of the book so there isn't information missing if you read the book.

He is a great professor because he presents information in a straightforward and organized way. His homework is helpful, exams are not outrageous and he really cares about students and their understanding. He was always very helpful during office hours too.

Calc 2 is hard in general but I felt he made the course a little easier. Obviously if you don't show up to class you will not pass, but I feel like there are lots of opportunities through homework to boost your grade. He made class feel fun and I enjoyed taking it with him.

Kevin is a more 'old school' math professor. Writes out everything on the board and gives you everything you need to do the homework provided you take good notes. I do not know what his online lectures are like. Moderate homework and will give opportunities to earn extra credit if the whole class bombs a test. (NOTE: Pre-Covid experence)

Great professor who was a nice guy and willing to get to know you beyond the class room. Was helpful in office hours and willing to help. He did lecture a lot and it was a lot of notes but he did do plenty

Felt like he belittled me whenever I need help and went to office hours. But, exams are not too bad if you spend a lot of time outside of class teaching yourself the material.

Professor Haertzen is a great professor for calc 2 you fill out not packets in class to make sure you have everything you need to succeed. He is a tough grader but in the end you will understand all material better than every and not make as many small mistakes he get you for. Very nice guy and wants to help you in anyway possible.

I enjoyed having Dr Haertzen. The class is meant to be hard. A lot of memorization. He grades harshly but that's just like the rest of the math department here. Look over the past 3 homework and know how to solve each problem before tests. I got 50% on my first exam and still managed to pull through. Just put some effort in and go to office hours.