Target/codes: correct an invented copy through child-controlled source comparison and, conditionally, explore a running system for that purpose; AC9TDIFK01 conditional, AC9TDIFK02 partial. Prepare: offline checker only after device gate; complete paper equivalent.
- Preview · 3 min. Restate the device gate and paper equality: same fictional task, different medium; no personal data.
- Source · 4 min. Read P T P B source and P T B B puppet copy from board. Let children name the third-entry difference before interaction.
- Model · 5 min. On unrelated blank symbols, show a keyboard or paper position choice. On approved device show how Tab reaches a native select and CHECK; do not repair the main copy for child.
- Child route · 7 min. Child changes copy position 3 B→P, checks all four and explains why. Use broad physical/picture/letter paper route or actual child-controlled keyboard/switch/pointer input if locally approved.
- Check/respond · 4 min. Record source-linked repair and adult cues. Only if actual digital use occurred, separately record input controlled, display feedback, software rule and purpose. If adult made the content choice or app was unavailable, K01 NOT OBSERVED.
- Close · 2 min. Child says what the checker responded after correction, or gives the paper equivalent “all four match.”