An entry-level course taught by David J. Malan, CS50x teaches students how to think algorithmically and solve problems efficiently. Topics include abstraction, algorithms, data …

Start learning computer science with Harvard's CS50 courses on edX. Access free courses, earn certificates, and study at your own pace with expert-led instruction.

CS50 (Computer Science 50) [a] is an introductory course on computer science taught at Harvard University by David J. Malan.

This course teaches you how to solve problems, both with and without code, with an emphasis on correctness, design, and style. Topics include computational thinking, abstraction, algorithms, …

An introduction to the intellectual enterprises of computer science and the art of programming.

This course is designed for both beginners and those with some experience in programming, focusing on the fundamental concepts of computer science and problem-solving.

Apr 14, 2025 · Let’s discuss the CS50 lineup, course by course, to help you find the best course for you. And let’s explain how you can earn a free certificate in most of these courses.