Goal: compare two approved surface results cautiously and name differences besides verified material. Proposed codes: AC9SFU03, AC9SFI01, AC9SFI02, AC9SFI03. Prepare: dated A log, new broad safe practice surface B with dried mark, same adult/cloth action, Card 34.
- Match gate · 3 min. Adult checks B's identity, verified material or UNKNOWN, dry state and no stain risk; keep mark size, desk, cloth/action similar where possible.
- Predict · 4 min. Child predicts B result before adult wipe and names how B differs from A. Material may not be the only difference.
- Model · 5 min. Teacher places A's dated log beside a blank B line. A drawn model never fills B's actual result.
- Child try · 7 min. Adult safely wipes B once; child records exact observed/attributed result or NOT TESTED. Compare A/B only if both actual records exist.
- Reason · 4 min. Child names colour/coating/drying time/pressure as possible differing conditions and repairs “material caused it” to a conditional statement about these trials.
- Exit · 2 min. Mark one feature to hold the same in a future repeat; keep a separate log per source.