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  1. Free K–12 Curriculum for Computer Science and AI | Code.org

    Bring computer science and AI education to your classroom with Code.org’s free K–12 curriculum, hands-on projects, and teacher professional development—no prior experience needed.

  2. Learn to Code — For Free — Coding Courses for Busy People

    You will learn to code by building dozens of projects, step-by-step, right in your browser, code editor, or mobile app. You will also earn free verified certifications along the way.

  3. CodeChef - Learn and Practice Coding with Problems

    Learn and Practice problems on data structures and algorithms like Linked Lists, Stacks, Queues, Matrices, Trees, Graphs, and more. Solve over 450 problems in total. Start with the …

  4. Learn to Code for Free with Coddy.Tech - Code Makes Perfect

    Learn code in a fun, effective way with Coddy.Tech – enjoy mastering diverse programming languages daily and build skills with ease, all online!

  5. CodeStepByStep - learn and practice coding online

    CodeStepByStep is an online coding practice tool to help students in college and high school intro programming courses learn and practice basic CS1 and CS2 programming concepts.

  6. Preserving code that shaped generations: Zork I, II, and III go …

    2 days ago · Microsoft’s Open Source Programs Office (OSPO), Team Xbox, and Activision are making Zork I, Zork II, and Zork III available under the MIT License.

  7. Learn to Code for Free: The 100 Best Websites and Resources

    Learning to code is one of the most powerful investments you can make in your professional life. In 2025 , this skill is no longer just for full-time developers. It is a form of digital literacy that …

  8. Code.org

    Use your creativity and problem solving skills to explore and build underwater worlds with code! Learn how AI and machine learning can be used to address world problems. Wanna write your …

  9. Code in Place

    Mar 31, 2020 · In Code in Place you will learn the fundamentals of Python programming including: control flow, loops and conditionals, console programs with variables, graphics, lists and …

  10. Source code - Wikipedia

    Source code is the form of code that is modified directly by humans, typically in a high-level programming language. Object code can be directly executed by the machine and is …