Students who earn a satisfactory score on 9 problem sets (i.e., programming assignments) and a final project are eligible for a certificate. This is a self-paced course–you may take CS50x on your own schedule.
HarvardX requires individuals who enroll in its courses on edX to abide by the terms of the edX honor code. HarvardX will take appropriate corrective action in response to violations of the edX honor code, which may include dismissal from the HarvardX course; revocation of any certificates received for the HarvardX course; or other remedies as circumstances warrant. No refunds will be issued in the case of corrective action for such violations. Enrollees who are taking HarvardX courses as part of another program will also be governed by the academic policies of those programs.
HarvardX pursues the science of learning. By registering as an online learner in an HX course, you will also participate in research about learning. Read our research statement to learn more.
Harvard University and HarvardX are committed to maintaining a safe and healthy educational and work environment in which no member of the community is excluded from participation in, denied the benefits of, or subjected to discrimination or harassment in our program. All members of the HarvardX community are expected to abide by Harvard policies on nondiscrimination, including sexual harassment, and the edX Terms of Service. If you have any questions or concerns, please contact firstname.lastname@example.org and/or report your experience through the edX contact form.
Learn the foundations of computer science and programming from a legendary Harvard course and professor. There are no prerequisites, previous programming knowledge or even computer knowledge required.
MOOCs stand for Massive Open Online Courses. These arefree online courses from universities around the world (eg. StanfordHarvardMIT) offered to anyone with an internet connection.
How do I register?
To register for a course, click on "Go to Class" button on the course page. This will take you to the providers website where you can register for the course.
How do these MOOCs or free online courses work?
MOOCs are designed for an online audience, teaching primarily through short (5-20 min.) pre recorded video lectures, that you watch on weekly schedule when convenient for you. They also have student discussion forums, homework/assignments, and online quizzes or exams.
Charlie Solimanaudited this course, spending 30 hours a week on it and found the course difficulty to be hard.
They were not kidding when they said the course was "demanding". I spent at least 2 hours daily working on the course and each course week took me a month to complete. It was exhausting a lot of the time. The problem sets are designed in such a way that one is forced to read and do further research to accomplish them. The sense of satisfaction I gained from completing each problem set was tremendous and even though the learning curve is steep (to say the least), I am now comfortable in my understanding of the basics of computer science and in coding in C. The web design module was probably the most fun even though for me personally it was the most demanding.
I guarantee you will be pulling your hair out sometimes if you take this course, but you will have tremendous fun most of the time and the sense of accomplishment is exhilarating!
Erik Trautman completed this course and found the course difficulty to be hard.
CS50 turned out to be precisely what I wanted. The platform is reliable, the UX is crisp, and, most importantly, the course content is phenomenal. Professor David Malan and his army of TAs put an absurd amount of effort into giving Intro to Computer Science actual LIFE. From the first video, it inspired that nervous excitement that always accompanied my setting foot into a lecture hall for the first time. This wasn't YouTube, this was the Real Deal.
Because the course was hard. The homework assignments, which were offered via the same appliance that the live students used and submitted to the same grading tool as well, took me anywhere from four to twelve hours apiece.
Mark Mahoneycompleted this course, spending 20 hours a week on it and found the course difficulty to be hard.
CS50x is essentially like taking a real, full-length college-level course, complete with lectures, breakout sections, walkthroughs, homework, quizzes, etc...
Prepare to be infuriated after watching 5-6 hours of video content and realizing that you still have absolutely no idea how to actually do the homework. If you're looking for somebody to hold your hand through the syntax (like the 56% of people with no background in CS likely were), you won't find it here.
I’m having a hard time describing CS50 without sounding hyperbolic. The course was just so damn good. The content is engaging. David Malan is too good at his job. The production value is absurd. Honestly, go check out a lecture for the production value alone.
I have now completed CS50, Stanford CS101, and half of Udacity CS101 and without question Harvard’s introduction to computer science is my favourite.
Billy Limcompleted this course, spending 4 hours a week on it and found the course difficulty to be medium.
A lot of effort can be seen to be placed in the production of lectures/shorts, making it very enjoyable and the concepts understandable. However, if you already know the concepts, the videos can seem overly-theatrical.
Robert Grutzapartially completed this course and found the course difficulty to be medium.
There is a lot of good stuff here, but is is so painfully disorganized it is a chore to figure out. Navigating the dozen sites associated with the class is more difficult than the actual material. If they ever organized this, it could be good. It is like they are trying to waste as much student time as possible for very basic instruction.
This course felt like a full college course. It is the first MOOC for which I felt like I would really have earned 3 or 4 credit hours because- similar to taking it in-person. The instructor, David Malin, does an outstanding job of making it interesting as well as making it easy to submit problem sets and get them graded quickly (because it's mostly automatic). There are lots of people taking the course at any one time so the Facebook group is very active with people helping each other.
this is such a great course with soo much info around, which is really easy to find via the courses own website! a lot of seminars, older courses and david malan and his staff are doing a great job teaching ppl, who didn't have any cs experience beforehand! the learning curve is steep but doable and there is a lot of help out there! great staff and great community!!!
I thought this was a great introduction to computer science. The instructor David Malan is one of the most charismatic instructors I've ever seen. The team behind this course did a phenomenal job in creating an extremely thought out curriculum with challenging and interesting problem sets. This is not an easy course but was well worth the effort.
I am currently taking MIT's python course. It is designed much better for beginners. While lectures for CS50 are phenomenal, problem sets are not realistic and quite discouraging. I am glad I decided to try something else.
Hannes Fury is taking this course right now, spending 1 hours a week on it and found the course difficulty to be medium.
Although I've only just begun, and don't necessarily plan to finish it at once, I may well end up doing so. Fun and engaging lectures that takes you along the way, step by step. This will be helpful for me in the future.