Job: first own response to a new source, then optional further work. Ready: only fresh C brief/fresh-c aid; teacher key/model data held back. Say: “What would you like to find out?”
- 0–3: State that this is a new ideal point-source drawing, not a tested lamp setup. Read/describe all source facts in the chosen mode. No actual trial or permission is supplied. Note relevant earlier access to the source; do not present practiced work as fresh.
- 3–12: Invite one own question/change, prediction/reason or plan component. Offer a scribe/point/direct-description route without supplying the comparison or result. Capture the actual first response and help before another component. Own valid questions, alternative sources and rejecting this source are available.
- 12–20: After first capture, invite a next component or leave it for another short sitting. A local approved actual try can be planned/conducted only under the ordinary setup review, with actual observations/operators separate. Teacher key examples are available only after first capture as teaching, not backfilled first evidence.
- 20–25: If unfinished, record not yet observed, offer another short sitting and give no completion-speed score. Use the separate descriptive key/next move against what actually happened. The learner need not calculate ideal spans, try all changes or complete a product.