The data you collect during the lesson — not after. C3 covers formative data collected at the end of a lesson. This cluster covers something different — the real-time signals available during it.
These are the signals experienced teachers read automatically: the student who stops writing, the room that goes quiet in the wrong way, the question that reveals a fundamental gap you didn't anticipate.
Learning to read these signals, and to act on them without derailing the lesson, is one of the highest-leverage teaching skills there is. It is also one of the hardest to develop, because most teacher training focuses on lesson design rather than live responsiveness. 👁️ The goal isn't to react to everything.
It's to know which signals require action, which require a note for later, and which are noise. This cluster teaches you to tell the difference.