tooling · pedagogy · DOM
Signal layer for lesson replays
María León ·
Replay tooling is only useful if the signal layer stays honest. We timestamp DOM snapshots against instructor audio peaks so reviewers land inside the explanation, not on a blank frame.
The pipeline stores lightweight selectors instead of full HTML dumps. That keeps storage predictable while still letting mentors comment on layout decisions students made mid-lab.
We ship the same capture hooks inside student sandboxes so they can self-review before submitting. The goal is observability without surveillance—nothing leaves the classroom tenant without an explicit export.