We used specific tasks to understand what a lesson had taught: locate a saved photo, send a message, or join a video call. These were more informative than asking whether everything made sense.
The amount of help needed mattered too. When the same step required another explanation, we revisited it in the next lesson rather than treating a completed demonstration as independent use.
In practice
- Observe the task, not just the answer to a question.
- Use recurring difficulties to choose the next lesson.