The first week he can be intimidating. Stick with it! He really cares about students and will help anyone. He really wants each student to understand how the math works and sometimes it can be confusing. After our first test he actually called each of us up to his desk went over our problem areas and gave us the opportunity to correct our test

Awesome teacher, Very down to earth, willing to help!! If you went to class it was easy to pass. He would also tell you what would be on a test the class before...AWESOME LOVED HIM!

I really enjoyed his class, math 171. First, he is very funny. He loves math and is a very passionate teacher who’s always glad to help. This is math, so you got to do the work. The people who wrote that he is unclear probably didn't do the homework -- so they were lost. He is an easy grader as well. Do the work and you shall get an A

Easy professor. Attend every class and you will pass. I got an A in this class. Very willing to help you if you want to help yourself succeed.

Professor Callaghan is extremely helpful. he's really funny and he makes you think. I had know idea that I could actually understand math until I had him as a teacher.

This was a great class. The Professor was easy to understand and to get along with. You will learn even if you don't want to. That's not a bad thing.

Professor Callaghan was one of the better math teachers I have had. He uses the book but assigns problems that are specific to the matherial. He is really helpful. Like with most things you do need to work hard and do the homework. Great teacher, really funny.

He is the bomb teacher, get to know him and he will take the time to make sure your doin well in his class!

As long as you show up to class and do the work assigned very easy teacher. Will go the extra mile if needed. He tells you what to expect on tests and quizes and will help while taking them.

Prof Callaghan is the best math professor I have ever had! He is extremely helpful, and truly cares that we learn the material. I need to take two more math courses and I hope to take them both with him. If you need to take a math course, he is the man!

I am not really into math but taking this class with this professor was the best thing I did. He is a great teacher and very funny!!

I got an A in his class because he is a good teacher. He would constantly help his students with tests and other problems. He doesn't collect homework and he types up all the class notes and hands them out. I would take his class again.

If you don't want to work to learn, don't take this class. The syllabus is clear of expectations; homework optional (but recommended), attendance mandatory. I've always hated math, but Callaghan was excellent explaining material on a practical level. Nice, reasonable guy, too. I actually look forward to taking my next required math course with him.

Loved Prof Callaghan. Definitely a fun personality and enthusiastic about math. Took during accelerated summe sess and got an A (and i hate math!). Practice exams nearly identical to actual exams. Don't be shy to ask for help, q's in class (he LOVES that and will be forever on your side for speaking up). Definately recommend!

Best math instructor at Gateway - really learned alot this summer! I was so worried about this course but am so grateful to have had him. Prof Callaghan - THANK YOU!

Prof Callaghan is great - I was so worried about taking calculus, but knew from day one all would be ok! He is extremely bright, engages the class and exceptionally helpful to all students. THANK YOU!

Prof Callahan helped me understand math, not just memorize the formulas. I can apply the skills to everything now instead of just learning for this particular class. Very fun, very enthuastic

Great guy goes outta his way to hElp u !!!!!

Prof Callaghan is the BEST! I am taking more math classes because of him. I want to eventually take calculus, but will wait until he teaches it!

I don't know why he got such bad reviews... My experience with him was great! He managed to cram an hour and a half worth of material in just 50 minutes. Somewhat difficult to understand but if you ask him for help he'll help you! Very funny and informative. Just be sure to apply yourself and you'll get a B easily.

This guy is tops! he is upbeat and makes me want to learn more! helpful and very understanding. will take more classes with him and have recomended him to others! its math so you cant get out of homework but it is never too hard and he will go over it in detail if you need help as long as you do it you get a good grade!

BEST MATH TEACHER EVER!!!! Professor Callaghan makes me want to go to a math class. He makes math easier to understand and shows you step by step how to do it. He is a wonderful teacher who knows how to reach his class! He is very helpful. I will follow him to the next level math class and have followed him from my last math class he is that good!

really good and easy teacher.gets distracted and starts telling jokes and family drama during class.Reviews before tests.doesnt check/grade homework!

A pleasure being in his class, very helpful, he wants you to learn, he puts you at ease by telling home stories, he does not embrass you, just come to CLASS, you won't regret it

Best Professor! Very nice down to earth person, makes learning fun. He really cares if you learn, and will go the extra mile to help you. Take his clss.

By far the best math teacher I've ever had. He knows what it's like to be intimidated, burned out, tired, etc... still makes his classes interesting and and fun. I learned a lot from this guy. Who'd think math could be fun?

John Is awesome, great teacher and bends over backwards for his students. I had him last year and made things very clear, his math class was a breeze because he explained everything so well.

A 5 credit math course was terrifying, but Callaghan made it awesome. He would just as frustrated WITH me (not AT me) if I couldn't understand a concept. He goes above and beyond to help-but try your best, too. He can relate to nontraditional students (he has a very inspring story). Great guy. Funny, too! Take his class & ask questions!

This man is AMAZING!!!!! One of the MOST intelligent and Funny men I have ever met!

Easiest professor, very lenient with grading and excellent at his job. He is super easy to follow and will explain things 100 times until you get it. If you're looking for an easy A, take this class.

OMG he should be crowned the god of math. I took this stat class before but never got to the bottom of it until I had his class. His way of forcing us to think to find the answers is amazing and makes it stick to your mind. Never go pass a subject before he makes sure that everybody's got it, even the dumest of dums. Love his jokes and stories.

Seriously, Callaghan is the man! He helped me out soooo much with math its ridiculous. He makes EVERYTHING easier to understand and tries his best to make sure everyone gets what going on. Plus he makes the class fun by telling jokes and personal anecdotes which makes it easier to like the class overall. Bottom line, TAKE THIS CLASS IF NEEDED!

He makes sure his students understand the material before moving on to the next chapter. Very clear and to the point. No math class is going to be easy but it definitely helps if you have a professor like Callaghan.

John is a very nice guy he is funny and is always willing to help however his teaching method is not for everyone. He is very intelligent but he goes way too fast,doesn't explain how he got answers yet expects you to know everything. Doesn't have the best handwriting, it is difficult to write notes. Not an easy class he doesn't simplify it either.

I have taken Callaghan for 4 math classes.His class is very difficult but worth it in the end.he is the most generous professor I have ever had.If you are trying, he takes notice&that helps your final grade a lot. ALWAYS available for extra help.Really loves math.MUST go to class. LOTS of clear notes. only grades test,not hw. all around great guy.

I think Mr Callaghan has trouble teaching this subject but I don't think it's easy to teach so I'll give him the benefit of the doubt. Very funny and witty. He wants all his students to succeed and if you go to class and show your effort you will pass.

Great professor! Always had class, he was always on the up even with the latest class. Definitely take another one of his courses again.

Professor Callaghan was awesome! Let me start by saying I am not that great in Math. I took him for Stats, and I actually enjoyed it! You have to read the book and do the optional homework assisgnments. He is not your conventional read off the powerpoint teacher. Show up to class, ask questionsparticipate and do the work and you will be fine.

In order to be successful in Callaghan's class you have to do a few things: attend class, participate, get extra help when needed, and do the homework not because it's graded but because it's what is on the tests. Though tough courses, I took him for 4 math classes because he rewards students with strong efforts, you just have to work for it.

He can go off on tangents sometimes but class is doable. He always offers office hours and caters to kids if they're struggling. Do the homework, and the tests are cake. Very nice guy.

Great Teacher. If you pay attention in class, get the book, do the homework and can do basic algebra you will get an A. He presents the material well and is good at chatting about other things to break up the monotony of a math class. He is a fair grader and will help you do well. He's a really bright guy.

He is one of the best professor I have ever had. I love his lectures, and his jokes. he assigns lot of homework, but it helps with the tests and the over all score because the homework takes up a good portion of the overall grade. His test are not too difficult. If you pay attention in class, you will do just fine.

Online class was a good class to take in the summer. Used the MyMathLab online code. Had to take the final in school in person. Easy A.

Super nice dude, very lenient with extensions if you ask. Genuinely wants you to learn and do well. He doesn't care about grades so much as long as you understand the material.

Math 186 He is good. The Test is hard. the class is good not that bad. you can take !!

I would suggest taking his class. He is so friendly and helps whenever you need.

Super nice and funny, gives a lot of handouts but you really don't need to be finished them because they're not graded and are used for practice. Gets side tracked easily but the way he teaches things are very easy to understand and if you don't, ask questions!

Professor J. Callaghan is a great Professor!!!! Great to be around. Teaches the fundamentals and he doesn't like to move on without everybody being on the same page!!! He definitely has a heart for his students. Come prepared to learn ,participate, and study...... you'll receive the grade your striving for. your work depends on your grade.

One of my favorite teachers are Gateway. Callaghan really cares about the students that participate in class and go to his office hours for extra help. He really wants everyone to win. Replaces lowest test grade, and the homework is an extra test grade too. Final counts for two test grades, so lots of chances to get a great grade!

This class was a bit unorganized, but Callaghan still really cares for students and will do whatever what it takes to help you win. Participation really matters, GO TO HIS OFFICE HOURS. HE WANTS TO HELP YOU. We did cram trig in the last two weeks, that was my only complaint. Really made Calc I hard. He's really lenient with grades and tests though.

Professor Callaghan is very knowledgeable and knows how to teach the foundation of the lesson very well. If you actually do the work then you can easily keep up. He uses web assign, which isnt easy to use, but its pretty useful to actually get some practice in for the lessons. Then hes very easy to comprehend.

I took this and thought it was soo much because I had to basically teach myself with ALEKS. once I got the hang of things I enjoyed it and the day we were in school to take the final he was very welcoming and cracked some jokes to help us ease up. if youre capable of learning on your own with little help i recommend as an online course.