Очень уважаю Александра Шень, учился по его учебнику, очень нравится его манера преподносить материал. Однако очень разочаровали остальные лекторы. (Уровень английского, материал и манера преподавания)

The lectures were really good, however explanation of more exercises would be a bit helpful as the videos are fairly short, I had problem understanding some of them due to limited number of examples.

the strategy of "try first" is great tool and is a must in my opinion to learn math, I hope Coursera improve more the quality of the lectures, add more exercises , Overall thank you so much

The material was interesting however the instructor Alexander Chen was incomprehensible. He was unable to verbalize a thought or explanation without sounding nonsensical.

I wish it went a bit more in-depth. I also wish there were more examples to practice. Overall, however, it was a good course, I have learned a lot.

totally it was a good and beneficial course but the heavy foreign accents of lectureres made it a little difficult to follow the lectures.

It's really very interesting course. I hope you all enjoy this course.

logical and interesting subject.

The course was very basic for me when I compared the material with the book of Discrete Mathematics

Last week was a bit confusing because the concept of permutation and cycles are mixed I guess.

The lectures aren't good and the assignments are not well explained as to what we need to do.

I didn't really get the lessons. The instructors weren't confident in teaching their topics.

The quiz were all very interesting, but sometimes it was hard to understand the lecturers...

Good course with many interesting quizzes although it is lacking of clear explanation

Last 3 weeks were not engaging at all, the first 3 were amazing (my opinion)

Explanations of Puzzles are not always clear.

Week 6 is very complex.

Good explanations .Last two weeks aren't clear enough to understand.

lectures, particularly by alexander vhen, were good!

language is not clear always ..it can be better

I didn't understand clearly the use of proof

Explanations not clear

The course is fun!

Good Mind teasers

HARD

Interesting but needs MUCH better instruction. I'm sure the people teaching this really know their stuff but the students need to be able to understand it. Not even considering the heavy accents making the instructors hard to understand at some times, the instructors are just not good teachers. In order for someone to be a good instructor they have to know the content AND be able to explain the content so that someone without knowledge of the content can easily follow and understand. I felt like most of what they said was reading or paraphrasing power point slides and this course seemed more like a 'review' course for someone who had already been taught the concepts previously. Many times the course flow seemed unorganized as well. Having to program was also a problem when the course was not supposed to have prerequisites as a 'beginner' course. I want to take more courses in this specialization but am worried to do so since these guys teach the other classes as I'm sure the instruction will be pretty bad as well but further complicated by more difficult concepts.

The instructor seems super nice and friendly and smart, buuuut. I'm not sure if there is a more methodical way to teach this material, I just find the presentation of the puzzles very frustrating. It's not really clicking for me to keep watching examples, and after a couple of weeks, I still feel like I'm not really learning anything -- just feel like I'm watching someone show me 'tricks' to solve puzzles in the hopes that some pattern will suddenly spark a light bulb. At every step of the way, I keep thinking 'nope, still not getting it', 'nope, that hint didn't work for me', 'nope, you're gonna have to explain it all the way to the end'. I can't help but feel there has to be a better way to teach mathematical thinking...