Similarly, Harvard Computer Science 50 (CS50) Lecturer David Malan refers to peer instruction for it being a key element of the restructuring of CS50 course operated since 2007 and one of the .... A 14 weeks journey with CS50 ends today. I have submitted all the required psets, labs and the final project and got my certificate. This was painful at times but was certainly worth it. My CS50 Certificate . Now for the rest of my life I will go telling everyone how I "studied at Harvard"! Good luck to everyone who is doing the course. "/>Which cs50 course to take