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Harvard University

CS50's Introduction to Programming with Scratch

Harvard University via edX


An introduction to programming using Scratch, a visual programming language via which aspiring programmers can write code by dragging and dropping graphical blocks (that resemble puzzle pieces) instead of typing out text. Used at the start of Harvard College's introductory course in computer science, CS50, Scratch was designed at MIT's Media Lab, empowering students with no prior programming experience to design their own animations, games, interactive art, and stories. Using Scratch, this course introduces students to fundamentals of programming, found not only in Scratch itself but in traditional text-based languages (like Java and Python) as well. Topics include: functions, which are instructions that perform tasks; return values, which are results that functions provide; conditions, via which programs can decide whether or not to perform some action; loops, via which programs can take action again and again; variables, via which programs can remember information; and more. Ultimately, this course prepares students for subsequent courses in programming.

Scratch is developed by the Lifelong Kindergarten Group at the MIT Media Lab. See

Taught by

David J. Malan and Brian Yu


4.0 rating, based on 6 Class Central reviews

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  • It was helpful and I recommend to the people who want to learn form scratch. I relly enjoyed learning about it. I'm sure you also will learn this topic with interest.
  • Excellent beginner programming course! Would be excellent for older children and teens to start learning how logic works when programming.
  • Anonymous
    Was Boring and When putting it on Job Resume the job actually denied me because of this. They said it was too babyish to be doing at 38
  • Anonymous
    It's easy to navigate and how like how they made it to be accessible by everyone, you guys are doing a great job and I can't wait to learn more and get immersed in the experience.
  • This is the basic fundamentals that gonna teach us the Computer Science & Engineering in 30 hours. This covers the DS, C, Cloud, e.t.c. Which are very useful in this techie world.

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