All five aids are original A4 SVG with selectable-text PDF counterparts. Their visual order is top-to-bottom and the colours are supplemented by headings and position. Read model prediction and invented record aloud; colour alone never encodes that difference. A tactile copy can use raised box boundaries, large number tiles and a two-column textured key. Do not pretend the generated SVG/PDF itself is Braille or a raised tactile print.
Claim poster · SVG
Largest headline in two parts: “EACH EXTRA LAYER HALVES / THE SENSOR VALUE!” Next, white on dark panel: “160 × 2⁻⁴ = 10 / at four layers, IF exact halving holds.” The qualification follows in its own light panel: “BUT OUR FIRST RECORD SAID 20 / That is 10 units above the model prediction. / We want a controlled retest before calling it dependable. These are invented arbitrary units.” It ends “LOOK AGAIN / Who made this poster, and who is its audience? / Which number is a model prediction? Which is a record? / What does the small-print limit change?” Byline: fictional Paper Screen team, draft poster, 18 September 2026. Tactile/voice: put heading, model and record on separate strips; read the qualification at the same volume as the headline.
Claim audit · SVG
Five numbered boxes in order: 1 Maker + purpose: “Who created this source? For whom? To do what?” 2 Exact claim: “Write the words or numbers it asks us to accept.” 3 Source detail: “Quote a value and say prediction OR recorded.” 4 Assumption + limit: “What must hold? What method detail is missing?” 5 Revised sentence: “Name the source; keep uncertainty visible.” Tactile/voice: five raised numbered cards can be moved as a reasoning sequence.
Model / data / gap · SVG
Instruction: “A conditional exact-half rule beside one invented record. Units: arbitrary.” Four column headings: n, 160 × 2⁻ⁿ, B: invented record, gap. Five rows: n=0 record160; n=1 record80; n=2 record44; n=3 record26; n=4 record20. Model and gap cells are blank for learner work. Footer: “n = 5 is unobserved. A prediction is not a new reading.” Tactile/voice: align each n/model/record/gap as four labelled number strips; keep predictions and recorded values on distinct textures.
Retest method mat · SVG
Five boxes in order: Question + variables: “Change: number of layers. Read: sensor value.” Hold / record: “Paper batch and size • lamp setting • geometry / Background light • sensor calibration or zero.” Runs + roles: “How many? What order? Who records? Who checks?” Safety + permission: “Teacher-approved low-voltage equipment only. / No eyes, mains wiring or public installation.” Observation status: “If no approved test took place, write: NOT OBSERVED.” The subtitle says a good written plan does not mean it was done. Tactile/voice: move a token from planned to observed only after an actual approved action.
Two-panel recommendation canvas · SVG
Subtitle: “For a fictional manager deciding only about a small supervised retest.” Panel 1 has blank ruled space under “WHAT THE SOURCES SHOW / Source + exact numerical contrast + model assumption.” Panel 2 has blank ruled space under “DECISION + NEXT CHECK / Limit + operational retest step + who may act.” Last line: “First-glance check: could either panel be mistaken for approval?” Tactile/voice: use two separately labelled page halves or two spoken segments, evidence then decision; if an Arts media artefact is assessed, keep the designed panel sequence in the submitted work.
The full source packet is here. These aids omit the fresh check values and do not alter source evidence; the teacher-targeted key is public, so the checks are not secure exams.