Looking for Fall 2020?

This is CS50

Harvard Extension School
Spring 2020

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 Web Programming
Week 10 Information

Final Project
Gallery

Ed Discussion for Q&A
Quick Start Guide

Office Hours
Sections
Staff
Syllabus

CS50 IDE
CS50 Sandbox
DB Browser for SQLite
Manual Pages
Python Documentation
Stack Overflow
Style Guide

With thanks to CS50’s alumni and friends

Looking for CS50’s OpenCourseWare? Looking for CS50 on edX?

Announcements

Congrats on finishing CS50! Here’s a gallery of classmates’ projects!