Build solid foundations for computational problem solving.
Level 1
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Level 8
Level 9
Learn how to organize your code efficiently by understanding what happens before, during, and after loops. Discover the importance of one-time actions versus repeating actions in program structure.
Video
Interactive lesson
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2 mins
Put your learning to the test with an interactive lesson
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Build solid foundations for computational problem solving.