What are the session phases?

Check-in asks where you are. Review pulls a prior idea. New content introduces the objective. Practice is the hands-on move. Synthesis is the explanation or score. The bridge names what comes next so the path does not feel like a dead end.

A four-question Quiz Me is mostly practice and synthesis. A long project may live in practice for a week. The phases are a teaching sequence, not a loading bar you must click.

When the system prompt knows the phase, it stops restarting the whole lesson every turn. That is what turns a chatbot into a class period.