Reading a frozen snapshot of the extraction artefacts, taken 2026-08-15 07:05 UTC at commit e96504e — 288 files. Figures are recounted from that snapshot, not from a live pipeline.
The Work Record

The Montessori progression, held as a sourced object.

Every material, attribute, ordering claim and declared freedom on this site is quoted from a public-domain witness, carries the page it was read from, and has passed a relevance check that deleted three fifths of what a quote check alone admitted; the observation flow that reads a mat against it is a demonstration, and is badged as one wherever it appears.

234
canonical materials
from 292 witness entries, 30 merged
17
asserted orderings
each carrying its sentence
4
readiness ages
quote-verified and relevance-gated
11
control of error
mechanism stated and gated
8
declared freedoms
order left open, by the book
99.0%
not asserted
5,098 pairs read, 52 claimed

Counted from the extraction artefacts when this page rendered, across 1344 leaves of 5 witnesses. The primary corpus — 246 materials from 1,376 leaves of Montessori’s own four volumes — is held separately and compared on the provenance screen.

The spine, as each witness asserts it

One catalogue per witness, drawn separately. Each is still resolved against itself alone here — the crosswalk that merges them across books is a separate, stored artefact, and the method is where it is applied. Solid lines are orderings both reading arms asserted; dashed lines are orderings one arm asserted and the other, reading the same pages, did not. A material appears here only if some sentence puts it before or after another one — and only if that sentence survived the relevance gate.

Maria Montessori, Dr. Montessori's Own Handbook (1914)

primary10 materials on the spine of 67 catalogued · 6 orderings (3 both arms)

material-by-material walkthrough, illustrated throughout

Bells → Musical Note Discs — one arm only (dissent recorded)Plane Geometrical Insets → Metal Insets — one arm only (dissent recorded)Rough and Smooth Board → Touch Board with Graduated Strips — one arm only (dissent recorded)Solid Insets → Broad Stair — both armsSolid Insets → Pink Tower — both armsSolid Insets → Sensorial Rods — both armsBellsBellsPlane Geometrical InsetsPlane Geometrical InsetsRough and Smooth BoardRough and Smooth BoardSolid InsetsSolid InsetsBroad StairBroad StairMetal InsetsMetal InsetsMusical Note DiscsMusical Note DiscsPink TowerPink TowerSensorial RodsSensorial RodsTouch Board with Gradua…Touch Board with Graduated Strips

Dorothy Canfield Fisher, The Montessori Manual (1913)

secondary-interpreter11 materials on the spine of 37 catalogued · 9 orderings (7 both arms)

numbered exercise manual, apparatus plate per exercise

Dressing Frames → Pink Tower — both armsMetal Insets → Colored Crayons — both armsPink Tower → Long Stair — both armsPink Tower → The Broad Stair — one arm only (dissent recorded)Plane Geometric Insets → Geometric Cards — both armsPlane Geometric Insets → Pink Tower — both armsSandpaper Board No. 1 → Sandpaper Board No. 2 — both armsSandpaper Boards → Sandpaper Board No. 2 — one arm only (dissent recorded)The Broad Stair → Long Stair — both armsDressing FramesDressing FramesMetal InsetsMetal InsetsPlane Geometric InsetsPlane Geometric InsetsSandpaper Board No. 1Sandpaper Board No. 1Sandpaper BoardsSandpaper BoardsColored CrayonsColored CrayonsGeometric CardsGeometric CardsPink TowerPink TowerSandpaper Board No. 2Sandpaper Board No. 2The Broad StairThe Broad StairLong StairLong Stair

Ellen Yale Stevens, A Guide to the Montessori Method (1913)

secondary-interpreter4 materials on the spine of 54 catalogued · 2 orderings (2 both arms)

continuous argument, four photographic plates, nothing numbered

Boxes of Fabrics → Colour Boxes — both armsRough and Smooth Boards → Sandpaper Letters — both armsBoxes of FabricsBoxes of FabricsRough and Smooth BoardsRough and Smooth BoardsColour BoxesColour BoxesSandpaper LettersSandpaper Letters

Maria Montessori, The Advanced Montessori Method (Spontaneous Activity in Education) (1917)

primary0 materials on the spine of 13 catalogued · 0 orderings (0 both arms)

continuous argument — psychology and pedagogy, no apparatus plates

Maria Montessori, The Montessori Elementary Material (1917)

primary0 materials on the spine of 121 catalogued · 0 orderings (0 both arms)

material-by-material catalogue of the 6-9 apparatus

The held-out ground truth

computed, not stored

What the witnesses do assert becomes the validation set for the composed field. None of it is an input to the field; all of it is a test the field must pass — every witnessed ordering reproduced, every readiness age recovered where a book read one, every control-of- error mechanism respected. The three lists below are counted from the artefacts each time this page renders: 17 orderings, 4 readiness ages, 12 control-of-error mechanisms.

Orderings (17)

  • Boxes of Fabrics before Colour BoxesStevens
  • Broad Stair before Long StairFisher
  • Dressing Frames before Pink TowerFisher
  • Metal Insets before Colored CrayonsFisher
  • Musical Bells before Musical Note DiscsHandbook
  • Pink Tower before Long StairFisher
  • Pink Tower before Broad StairFisher
  • Plane Geometric Insets before Geometric CardsFisher
  • Plane Geometric Insets before Pink TowerFisher
  • Plane Geometrical Insets before Metal InsetsHandbook
  • Rough and Smooth Board before Touch Board with Graduated StripsHandbook
  • Rough and Smooth Boards before Sandpaper LettersStevens
  • Sandpaper Board No. 1 before Sandpaper Board No. 2Fisher
  • Sandpaper Boards before Sandpaper Board No. 2Fisher
  • Solid Insets before Broad StairHandbook
  • Solid Insets before Pink TowerHandbook
  • Solid Insets before Sensorial RodsHandbook

Readiness ages (4)

  • Pink Tower — readiness 2Stevens
  • Montessori Bells — readiness 5Handbook
  • Lace and Ribbon Frames — readiness 4Fisher
  • Solid Insets — readiness 2.5Handbook

Control of error (12)

  • Long StairStevens
  • Pink TowerFisher
  • Pink TowerStevens
  • Broad StairStevens
  • Cylinder BlocksElementary
  • MonochordElementary
  • Solid Geometrical InsetsFisher
  • Musical Notation MaterialHandbook
  • Musical Notation MaterialHandbook
  • Plane Geometrical InsetsHandbook
  • Solid InsetsHandbook
  • Plane Geometric InsetsStevens

The method →

Every deposed witness on one canonical spine, each ordering weighted by how many assert it, consensus computed at render time and never stored.

The progression →

Every material with its surface forms, quote-verified attributes and plates; every ordering with the sentence that carries it; and the panel where each book declares the order it refuses to fix.

Provenance →

The audit layer: the gate panel with every deletion and its logged reason, the reading arms, the resolution settings, and ten assertions sampled at random to check by hand.