Twenty worked… | Foundation Music · T2 W15–16 · Practice Swaps

Two worked fictional settings per day preserve the Music operation. After Check means first U/V response has been saved. A picture does not show how a real object sounds, whether a listener hears a contrast, what a community uses music for, or which container holds more.

Day	Worked swap 1	Worked swap 2
71	Paper museum display: A circle and B striped square → two named invented recipes, not two pitches.	Space postcard: two different source keys → one fixed 330 Hz fundamental in the candidate files.
72	Model library sign: A A A A → one source label at all four places.	Toy harbour flag: B B B B → B repeated, with no A/B boundary.
73	Game-card score: A A B B → one source switch after place 2.	Textile strip: B B A A → one source switch after place 2 in the opposite direction.
74	Paper workshop: safe source X + adult gentle stroke → observation stays blank until tried.	Model theatre: source Y + approved tap → source and action are two separate choices.
75	After Check: cardboard exhibition A A B A → changes after 2 and 3.	After Check: paper observatory B A A B → changes after 1 and 3.
76	Fictional station: source P + brush, source P + tap → same object, two actions; no claimed sound.	Map desk: source Q + soft press versus source R + soft press → changed source, fixed action.
77	Paper boat: A A B B → A B B B by changing place 2 only; switch moves earlier.	Toy garden: B B A A → B A A A by changing place 2 only; switch moves earlier.
78	Gallery maker: B A A B → two source changes in an original four-event plan.	Space game: A B B B → one early switch; child may choose another purpose.
79	Child's original A/B paper score received by willing teacher → record actual score share, no acoustic claim.	Approved child-directed sound received by willing adult → record medium and actual reception, not assumed feeling.
80	After Check: paper tower B B B A → one ending change to A.	After Check: storybook card A A B B → one middle change to B.