Target/codes: use a prebuilt two-path paper board to show only the ending matched to a selected sign, then reset for the other sign; AC9AMAFD01, AC9AMAFC01. Prepare: C reveal board, two large covers or loose ending cards, C notes.
- Welcome · 3 min. Name the difference between a maker’s branch plan and a reader-operated paper board. The adult model is not the child’s finished work.
- Model · 4 min. With both endings covered, point to SQUARE sign and reveal only its LEFT ending. Reset; point to CIRCLE and reveal only RIGHT.
- Try together · 5 min. Child tells adult which sign to select; adult operates a large prebuilt cover. Ask what the reader can see now and what remains hidden.
- Child choice · 7 min. Child directs two trials on the adult’s original board, one per sign, or operates broad cards if comfortable. No role-play or touch is compulsory.
- Notice · 4 min. Log selected sign, shown ending, hidden ending and reset. This is a guided mechanism trial, not evidence an outside audience used the child’s work.
- Close · 2 min. Keep the two-path board; tomorrow the reveal order can make a difference.