{{LESSON_TITLE}}
{{ONE_LINE_SUMMARY}}
The idea
Teach the one thing this lesson is about. Stay inside working memory: a learner should finish this in a few minutes and come away with a single win they can build on. Cite sources inline — like this — so every claim is checkable.
Worked example
Show it concretely before asking the learner to do anything.
// a small, complete, runnable example
Go deeper
Recommend exactly one primary source — the highest-quality thing you found on this topic: Author, “Title”.