All lessons
control-flow
2 free lessons tagged control-flow across Programming, AI. Each one is a short sequence of focused steps with narration and a five-question quiz at the end — take them in any order, no signup required.
Programming
beginnerDecisions and Loops: Making a Program Choose and Repeat
Teach a program to react and repeat: booleans and comparisons, if/elif/else chains where order is logic, while and for loops, range() and its excluded stop, break and continue, and the skill that matters most, tracing a loop by hand. Ends with a working number-guessing game.
10 steps·~15 min
AI
beginnerLoop engineering basics: the agent control loop
How LLM agents actually run: the iterative prompt-action-observation loop, the ReAct shape, the smallest tool-calling loop in twelve lines, why you always stack three termination layers, what the model sees on iteration N, and when a single prompt is the better answer.
8 steps·~12 min