Diagnose a running toilet from an illustrated tank model

Part of

Plumbing and everyday water problems — Understand ordinary fixtures and distinguish an approachable maintenance task from urgent plumbing help.

Planning mode

P — Ordinary practice. A routine task or tabletop exercise. Still adapt tools, materials, accessibility, and supervision to the learner.

These are production-planning labels, not age ratings or safety certifications. A learner's age alone does not establish readiness.

Planned lesson structure

1. A real problem and what success looks like
2. A short entry check of the prerequisites that matter
3. A clear boundary: supervision, materials, stop conditions
4. A worked example
5. A learner attempt before the answer
6. A quality check with observable criteria
7. A transfer task, with a later retention check