Four identical sound-event starts leave three between-start gaps. S/M/L are short/middle/long planned time, shown by one/two/three raised blocks; they do not measure child movement or seconds. A neutral adult reads all marks and moves broad fixed cards only as directed. Colour never carries the only meaning. A no-sound route meets score-planning/comparison, not actual listening or performed timing. Candidate PCM needs human listening and device-volume approval. Fresh-check routes state only their public tasks.
A · Three between-start gaps
File: print/gap-key.svg / print/gap-key.pdf. Exact content: Four identical numbered event starts have three spaces between them; S one block, M two, L three are comparative planned-time keys. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Four same sound events · change time between starts | A · Three between-start gaps | S=SHORT / M=MIDDLE / L=LONG BETWEEN STARTS | Four event marks stay L pitch / V level / invented source A. | FOUR STARTS LEAVE THREE GAPS | GAP CARD · S · SHORT | 1 raised block | GAP CARD · M · MIDDLE | 2 raised blocks | GAP CARD · L · LONG | 3 raised blocks | Count the four dots separately from the gaps. | These widths are planned time, not body distance. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile/no-print alternative: Use four broad fixed event discs and three wide spacer slots. S one raised block, M two, L three. Count starts and between-start gaps separately; read full words.
B · Keep the gaps even
File: print/steady-four.svg / print/steady-four.pdf. Exact content: A four-event track has M M M between-start gaps and identical L pitch, V planned level and invented source A at each start. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Four same sound events · change time between starts | B · Keep the gaps even | S=SHORT / M=MIDDLE / L=LONG BETWEEN STARTS | Four event marks stay L pitch / V level / invented source A. | ONE FOUR-EVENT MUSIC PLAN | FOUR IDENTICAL EVENT STARTS | 1 | 2 | 3 | 4 | M | M | M | M–M–M · every start-to-start gap matches. | Four sound events remain the same L / V / source A. | A paper line cannot prove actual steady playing. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile/no-print alternative: Use four identical fixed event discs and three two-block M spacers. Child compares all three gaps by touch or words; sound is optional.
C · Starts draw closer
File: print/gather-four.svg / print/gather-four.pdf. Exact content: Four identical event starts have long, middle, short planned gaps: L M S; first interval longest, final shortest. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Four same sound events · change time between starts | C · Starts draw closer | S=SHORT / M=MIDDLE / L=LONG BETWEEN STARTS | Four event marks stay L pitch / V level / invented source A. | ONE FOUR-EVENT MUSIC PLAN | FOUR IDENTICAL EVENT STARTS | 1 | 2 | 3 | 4 | L | M | S | L–M–S · starts draw closer toward the end. | First gap is longest; final gap is shortest. | This is music timing, not a direction to hurry. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile/no-print alternative: Use four fixed event discs and 3-, 2-, 1-block spacers left to right. The discs represent sound starts, not a person's physical path.
D · Starts spread apart
File: print/spread-four.svg / print/spread-four.pdf. Exact content: Four identical event starts have short, middle, long planned gaps: S M L; first interval shortest, final longest. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Four same sound events · change time between starts | D · Starts spread apart | S=SHORT / M=MIDDLE / L=LONG BETWEEN STARTS | Four event marks stay L pitch / V level / invented source A. | ONE FOUR-EVENT MUSIC PLAN | FOUR IDENTICAL EVENT STARTS | 1 | 2 | 3 | 4 | S | M | L | S–M–L · starts spread apart toward the end. | First gap is shortest; final gap is longest. | This is music timing, not physical spacing. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile/no-print alternative: Use four fixed event discs and 1-, 2-, 3-block spacers left to right. Compare gap time only, not physical spacing or safety.
E · What changed?
File: print/fixed-changed.svg / print/fixed-changed.pdf. Exact content: Track A gaps M M M; Track B L M S. Gap 1 and gap 3 differ, middle gap and all four event identities hold. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Four same sound events · change time between starts | E · What changed? | S=SHORT / M=MIDDLE / L=LONG BETWEEN STARTS | Four event marks stay L pitch / V level / invented source A. | TRACK A · FIRST TIME-SHAPE | 1 | 2 | 3 | 4 | M | M | M | TRACK B · ANOTHER TIME-SHAPE | 1 | 2 | 3 | 4 | L | M | S | Gaps 1 and 3 change; middle gap holds. | Four event identities stay L pitch / V level / source A. | No real movement rule comes from this score. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile/no-print alternative: Build two broad fixed four-event rows. A uses 2/2/2 raised blocks; B uses 3/2/1. Child finds changed spacer positions and same event discs.
F · Two plans and real evidence
File: print/plan-actual.svg / print/plan-actual.pdf. Exact content: Two broad symbolic four-event tracks have three empty gap slots each; dots are movable placeholders, not a timed layout. Fields distinguish child-owned plans from actual playback and actual listener words. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Four same sound events · change time between starts | F · Two plans and real evidence | S=SHORT / M=MIDDLE / L=LONG BETWEEN STARTS | Four event marks stay L pitch / V level / invented source A. | TRACK A · BLANK SYMBOLIC SLOTS | 1 | 2 | 3 | 4 | ? | ? | ? | TRACK B · BLANK SYMBOLIC SLOTS | 1 | 2 | 3 | 4 | ? | ? | ? | Dots here are placeholders; move them with chosen gaps. | Actual playback: NOT TESTED / source if observed: __ | Listener actually said: NOT ASKED / words: ____ | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile/no-print alternative: Offer two rows of four identical event discs and three replaceable spacer slots each. Move discs to match the selected block widths after child directions; keep actual fields NOT TESTED/NOT ASKED until true.
Fresh Gap 1 · Compare tracks
File: check/gap-1.svg / check/gap-1.pdf. Exact content: Public unfamiliar pair: Track A gaps S M L; Track B gaps M M M; four identical event marks in both. The pattern names are not printed in the answer area. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Four same sound events · change time between starts | Fresh Gap 1 · Compare tracks | S=SHORT / M=MIDDLE / L=LONG BETWEEN STARTS | Four event marks stay L pitch / V level / invented source A. | TRACK A · FIRST TIME-SHAPE | 1 | 2 | 3 | 4 | S | M | L | TRACK B · ANOTHER TIME-SHAPE | 1 | 2 | 3 | 4 | M | M | M | Which track spreads? Which stays even? | Name the first and last gap of the spreading track. | What holds? What can paper not prove? | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile/no-print alternative: Set two broad fixed rows: A 1/2/3 raised spacer blocks, B 2/2/2. Read all marks neutrally; child identifies which spreads, which is even, first/last evidence and one hold.
Fresh Gap 2 · Make another shape
File: check/gap-2.svg / check/gap-2.pdf. Exact content: Public base Track A gaps S M L and identical Track B copy. Child changes only B's first and last gap so each B gap is shorter than the previous; middle and events hold. Verbatim printed text in layout order: SUBJECTNEST · FOUNDATION MUSIC | Four same sound events · change time between starts | Fresh Gap 2 · Make another shape | S=SHORT / M=MIDDLE / L=LONG BETWEEN STARTS | Four event marks stay L pitch / V level / invented source A. | TRACK A · FIRST TIME-SHAPE | 1 | 2 | 3 | 4 | S | M | L | TRACK B · ANOTHER TIME-SHAPE | 1 | 2 | 3 | 4 | S | M | L | Make each B gap shorter than the one before. | Change only first/last; circle old, write new beside. | Keep middle M and all four event marks the same. | Original resource · CC BY 4.0 · exact alternatives in pack. Tactile/no-print alternative: Make two fixed rows of four event discs with public S/M/L spacers. In B only, child replaces first and last spacers on their own direction; adult supplies no answer.
Evidence limit: Paper marks show planned time shapes. Actual sound, aural discrimination, comfort, listener words, community context and audience receipt require separate observations.