This is CS50 at Harvard College. Looking for CS50 on edX? Or for CS50’s own OpenCourseWare?

This was CS50

Harvard College
Fall 2021

Week 0 Scratch
Week 1 C
Week 2 Arrays
Week 3 Algorithms
Week 4 Memory
Week 5 Data Structures
Week 6 Python
Week 7 SQL
Week 8 HTML, CSS, JavaScript
Week 9 Flask
Week 10 Emoji

Cybersecurity

🙋Ed Discussion for Q&A

Announcements
FAQs
Final Projects
Labs
Music
Office Hours
Problem Sets
Quizzes
References
Sections
Seminars
Staff
Study Buddies
Supersections
Syllabus
Test
Tutorials

CS50 Status Page
Visual Studio Code

Supersections

Week 1
Week 6
Week 7