Welcome This is CS50, Harvard University’s introduction to the intellectual enterprises of computer science and the art of programming, for concentrators and non-concentrators alike, with or without …

Used at the start of Harvard College’s introductory course in computer science, CS50x, Scratch was designed at MIT’s Media Lab, empowering students with no prior programming experience to design …

Welcome Introduction to the intellectual enterprises of computer science and the art of programming. This course teaches students how to think algorithmically and solve problems efficiently. Topics …

Feb 11, 2026 · CS50x uses our own Gradebook. If you’ve never visited that link before, you’ll need to click the link to “enroll,” which really just enables your Gradebook access!

This project was built as my final project for CS50x and reflects my understanding of full-stack web development using Flask, SQL, and frontend technologies. Subject Roadmap focuses on simplicity, …

Expectations You are expected to submit ten problem sets, and submit a final project. Certificates CS50x is free to take, and you are welcome to submit the course’s ten problem sets and final project …

Welcome This is CS50, Harvard University’s introduction to the intellectual enterprises of computer science and the art of programming, for concentrators and non-concentrators alike, with or without …

Week 0 Scratch Computer Science. Computational Thinking. Problem Solving: Inputs, Outputs. Representation: Unary, Binary, Decimal, ASCII, Unicode, RGB. Abstraction ...

This is CS50x 2026. 🎉 Curious how your 2025 work counts toward the 2026 course? See our FAQs if you started in 2025 or earlier. Interested in a verified certificate, a professional certificate, or transfer …

This is CS50x 2026. 🎉 Curious how your 2025 work counts toward the 2026 course? See our FAQs if you started in 2025 or earlier. Interested in a verified certificate, a professional certificate, or transfer …