This is CS50

CS50 Scratch

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  • Weeks
  • Week 1: Sprites
  • Week 2: Functions
  • Week 3: Events
  • Week 4: Values
  • Week 5: Conditions
  • Week 6: Loops
  • Week 7: Variables
  • Week 8: Abstraction
  • Week 9: Building from Scratch
  • Problem Sets
  • Problem Set 1
  • Problem Set 2
  • Problem Set 3
  • Problem Set 4
  • Problem Set 5
  • Problem Set 6
  • Problem Set 7
  • Problem Set 8
  • Problem Set 9
  • Language
  • English
  • Tiếng Việt
  • 中文
  • License

Week 3 Events

Watch the lecture

Video: https://www.youtube.com/watch?v=7P4QR2o3pME?screen=PcGJW9T9Edk

Week 3 Events

  • Watch lecture.

    • Audio

    • Notes

    • Source Code

      • Index
      • Studio
      • Zip

    • Subtitles

    • Transcript

    • Video

      • CS50 Video Player

      • MP4

        • 360p
        • 720p
        • 1080p
        • 4K

      • YouTube

  • Submit Project 3.