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Math · Foundational

Thinking in Code

Computers do exactly what they're told, one instruction at a time. Learn to think like a programmer: write step-by-step instructions for a robot, hunt down bugs, shrink long programs with loops, let the robot decide for itself with "if" and "while", draw stars with a turtle, and trace real code line by line as its variables change.

9 lessons~55 min0/9 complete
1

Instructions

Sequences and bugs.

  1. Step by StepPrograms are exact instructions
  2. Finding BugsDebugging like a detective
2

Loops

Saying it once.

  1. Repeat YourselfLoops shrink programs
  2. Turtle GeometryDrawing shapes with loops
3

Decisions

Programs that react.

  1. If This, Then ThatConditions and while loops
  2. Escaping MazesThe wall-follower rule
4

Memory

Variables, loops that count, and functions.

  1. Boxes with NamesVariables and assignment
  2. Loops with MemoryCounters, totals and off-by-one
  3. FunctionsName it once, use it everywhere