Lesson 9 — Decomposition and specification: the method, applied
Unit II · Computational problem solving

L09_problem.txt                              student     The deliberately vague problem: a community garden watering rota.
L09_spec_template.txt                        student     Specification worksheet: understand, decompose, specify with acceptance criteria, execute verbatim, verify, revise, AI-use record.

Python 3.11 or newer. Standard library only. Run each program from the folder the lesson tells you to put it in:
    python <file>.py        (Windows)
    python3 <file>.py       (macOS and Linux)
