A teacher among makers

Paul Klee taught at the Bauhaus from 1921 until 1931, first in Weimar and then in Dessau. The school gave him students, workshop problems and a sustained occasion to explain how a picture might be made. His classes did not offer a recipe for painting “like Klee”. They asked what happens when a point becomes a line, a shape is shifted or reflected, or one colour changes its relation to another. The surviving record includes his own lecture manuscripts, calendars and letters, as well as students’ notes, exercises and later recollections. Read together, these sources show both the ambition of his teaching and the limits of any single account of it.[1][2][3]

The distinction between a theory class and a workshop matters. Klee taught visual organisation; students and specialist workshop leaders made books, glass paintings and textiles with their own technical knowledge. Lena Bergner’s notes, for example, show her translating formal exercises into a textile practice that became hers. The Bauhaus years were thus an exchange among makers in a changing institution, rather than a line of influence running in only one direction.[3][4][5]

Contents

  1. When did Klee join the Bauhaus?
  2. What sort of school did he enter?
  3. How did a Klee lesson work?
  4. Colour as relation, not a secret code
  5. The 1925 Pedagogical Sketchbook
  6. Weaving: design, technique and student authorship
  7. His painting and his teaching
  8. Why did the Bauhaus period end?

When did Klee join the Bauhaus?

Walter Gropius called Klee to the Weimar Bauhaus in late 1920. Sources disagree on the precise date of that appointment: the Bauhaus Kooperation biography gives 29 October in its structured chronology but December in its prose; a Bauhaus-Archiv study says late November. They agree on the more useful distinction that Klee’s post began on 10 January 1921. He did not immediately start the full programme of formal lectures with which he is now associated.[1][2][6]

His first documented composition practicum began on 13 May 1921 and met every two weeks. In a letter to Lily Klee about the first meeting, he described discussing the students’ work and passing around ten of his own watercolours for analysis of their formal and compositional relations. Marianne Keller Tschirren finds a list of some 45–46 prospective students; Klee limited the group to about 30. That first session offers a concrete picture of his practice: looking closely at works already made, comparing how their parts function, and testing an artist’s own examples in a classroom. It does not prove that every later lesson followed that pattern.[2]

The first regular form-theory sequence began on 14 November 1921 and ran to 3 April 1922. Klee repeated and developed parts of it in subsequent terms, with a fuller discussion of colour in winter 1922/23. His notes for the 1923/24 course covered Principielle Ordnung (principial order) and Bildnerische Mechanik (pictorial mechanics). The manuscript was a working instrument: he revised, reused and reordered material. A later table of contents dated 1928 suggests how he wished to organise his ideas; it does not establish that every proposed topic was delivered in every semester. The available timetable evidence even leaves some individual terms uncertain.[1][2]

What sort of school did he enter?

The Bauhaus opened in 1919 with an ambition to bring artistic study and craft work into a new relationship. Its Weimar teaching programme changed as teachers, workshops and institutional aims changed. The practical preliminary course, or Vorkurs, is associated first with Johannes Itten and later with László Moholy-Nagy and Josef Albers. Klee’s form and colour lessons belonged to the broader preliminary education but were not the whole Vorkurs. Wassily Kandinsky also taught theory. Reducing the school’s teaching to a single master’s geometry misses how different classes and workshops met, overlapped and sometimes disagreed.[1][2][7]

At Weimar Klee was assigned to the bookbinding workshop in 1921. After its closure in summer 1922, he had a short metal-workshop responsibility, then glass painting; he also taught drawing and, in some semesters, evening life drawing. Published institutional summaries do not give wholly consistent workshop dates. Keller Tschirren’s reconstruction from schedules and documents supports the sequence more securely than a neat, uninterrupted list of posts. An assignment as a form master did not make Klee the maker of every object produced in a workshop: technical instruction, material handling and final execution involved other teachers and students.[1][2]

The school moved to Dessau in 1925, a shift that changed its setting and strengthened the design and production context in which Klee taught. He continued form teaching there, added work directed at weaving students from 1927, and joined Kandinsky in a free painting class by winter 1927/28. He also had other teaching obligations. These developments complicate a simple division between “Weimar theory” and “Dessau painting”: exercises, workshop design and independent artistic work were present across the period, though their institutional balance shifted.[1][2][4]

How did a Klee lesson work?

The surviving notes are unusually extensive: the Zentrum Paul Klee identifies roughly 3,900 pages of teaching material. The dated Weimar lectures are comparatively full texts; many later Dessau sheets are diagrams with little prose. They therefore need to be read alongside student copies, completed exercises and records of particular terms. A page of Klee’s notes can show an idea available to him without by itself proving how he explained it to a room of students.[2][3][8]

In the Principielle Ordnung, Klee analysed elementary visual components such as point, line and plane and means such as line, light and dark, and colour. In later “special” order, these elements move. A design can shift, turn, mirror or overlay a figure; dividing a surface produces a rhythm. These are operations rather than a fixed collection of Bauhaus motifs. If one small shape is repeated across a page, a simple translation can make a measured sequence; reversing alternate copies changes the relation between edges; a rotation makes the shape address a different direction. Klee wanted students to notice the new organisation generated by the action, not merely to decorate a surface with a recognised sign.[3][4]

Lena Bergner, who studied in Dessau between 1925 and 1930, left a particularly valuable witness. She attended Klee’s general form teaching and his theoretical course for weaving. In later testimony she said he drew sketches on the board, gave brief explanations, and the students copied the schemes before completing exercises at home. She found the method useful for more disciplined design, while remembering that his sparing words could make its meaning hard to grasp until the practical work clarified it. Another student, Helene Schmidt-Nonné, remembered his teaching as thorough. These are distinct experiences, and neither should be promoted into a verdict shared by every Bauhaus student.[3]

Bergner’s records document translation, rotation, reflection and overlay as ways of developing a surface. Her exercises do not merely illustrate Klee’s thought after the fact: they are evidence of a student testing and interpreting a prompt. Their sheets and textile designs belong to her. Eggelhöfer also records occasional critiques of completed woven pieces under Klee’s direction, but explains that the technical teaching of weaving belonged to Gunta Stölzl, the workshop leader. A reader should keep the board diagram, the exercise and the fabric as related but different objects, with different makers and functions.[3][5]

Colour as relation, not a secret code

Klee had investigated colour before he joined the Bauhaus. In teaching, he could set older systems associated with Goethe and Philipp Otto Runge beside newer schemes by Wilhelm Ostwald and Otto Koelsch. Keller Tschirren’s study of his lesson material and student notebooks shows comparison and revision rather than one colour wheel imposed as dogma. A circle or sphere could help students think about order, oppositions and transitions, but the diagram was an analytical tool, not a key that decodes every Klee painting.[2][9]

The classroom question was often what happens between colours. A small change in hue or value alters the role of a neighbouring patch; a sequence makes a transition perceptible; a repeated contrast can set up rhythm. Klee’s own paintings can make such questions vivid, though their visual solutions cannot be treated as diagrams transcribed from a particular lecture. A painting has a material support, layering and decisions specific to that object. His Crystal Gradation of 1921 makes a useful adjacent case: its changing bands and geometric order invite comparison with his attention to gradation, but the dated work is not proof of the content of an undocumented class.[9][10]

Paul Klee's Crystal Gradation, a 1921 work of stepped geometric colour transitions
Paul Klee, Kristall-Stufung (Crystal Gradation), 1921. Kunstmuseum Basel, 1968.407. Image: Rawpixel CC0; 1024 px comparison from the 300 dpi master.

Music was another way Klee could examine temporal order. A Bauhaus-Archiv study identifies a teaching foldout of 16 January 1922 in which he diagrammed the opening bars of Bach’s sixth sonata in G major for violin and harpsichord, BWV 1019. It is a concrete example of music entering his teaching, without implying that every coloured rectangle represents a musical note or that a painting has a recoverable score. His household’s music making and the Bauhaus’s public musical culture also had their own histories; the Bach diagram alone does not merge them.[6]

The 1925 Pedagogical Sketchbook

Klee’s Pädagogisches Skizzenbuch appeared in 1925 as volume two of the Bauhausbücher series. It brought selected visual ideas about sketching, movement and construction to readers beyond the school. The book’s publication is significant, but it is a short, deliberately shaped work, not a complete transcript of ten years of teaching. A later English title, Pedagogical Sketchbook, and subsequent reprints have helped make it the best-known part of his pedagogy.[1][11]

Three bodies of evidence should be kept separate: the 1925 book published in Klee’s lifetime; his much larger body of working teaching notes, now available in digital facsimile and transcription through the Zentrum Paul Klee; and the posthumous editorial volumes that present selections under titles associated with his “notebooks”. They differ in authorship of arrangement, scope and proximity to actual lectures. Looking only at a memorable printed diagram can make a class seem more complete and settled than the dated documents allow.[2][8][11]

Weaving: design, technique and student authorship

Klee offered a distinct design course for weaving students from summer 1927. There is a possible earlier connection to the workshop in 1923 through Gunta Stölzl’s retrospective recollection, but Keller Tschirren finds no corresponding contemporary timetable entry. The documented later course explored segmentation of the plane, colour and repeated operations. Its teaching belonged within a workshop in which women were often directed by the school’s admission and training structures. Stölzl and the weaving students developed the practical techniques and actual fabrics. Their work should be named as work, not absorbed under the teacher’s name.[2][4][5]

Fabienne Eggelhöfer compares Klee’s pictorial “weave architectures” with designs from the workshop, including notes by Bergner. She cautions that resemblance between a Klee square painting and a textile is not proof that a student copied the painting. Shared procedures—shift, turn, reflect, overlay—could yield related structures through different materials and purposes. A drawn division of a plane may guide an investigation on paper; a woven counterpart must also contend with yarn, loom, density, colour behaviour and use. This is where a general formal principle becomes another maker’s technical decision.[4][5]

Bergner’s later career further resists the idea of a student as a mere receiver. After the Bauhaus she worked in Königsberg, the Soviet Union and Mexico, developing textile work in very different institutional and social settings. Her Bauhaus notes matter because they connect a lesson to subsequent independent practice; they do not prove that all her later decisions originated in Klee’s class. Her surviving study sheets and designs are held with their own authorship and image rights, so this page discusses the evidence without reproducing them.[3]

The Dessau timetable is not entirely settled even at the end. Klee wrote to Lily in September 1930 that he had been relieved of everything except free painting. Yet Kitty van der Mijl Dekker’s diploma records a colour course for weaving in winter 1930/31. Keller Tschirren sets the two documents side by side. The responsible conclusion is that the available records conflict about the exact late teaching load, not that one can silently be discarded.[2]

His painting and his teaching

Klee’s paintings can sharpen a reader’s sense of his classroom questions: a line may imply a path, a repetition can become rhythm, and adjacent colours can create movement without depicting it literally. But a formal similarity is only a starting point for interpretation. To connect a painting securely to a lesson one needs the work’s date, material history, Klee’s own records and evidence of what was taught then. He was an artist who taught, not a painter who simply illustrated a finished curriculum.[2][9]

For example, Crystal Gradation is a 1921 work contemporaneous with his early Bauhaus period; Ancient Harmony belongs to 1925, when the Sketchbook appeared; Ad Parnassum is from 1932, after he had left the school. Their coloured organisations may be compared, but none is automatically a demonstration sheet for a named class. The dedicated colour, materials and notebooks pages can pursue those different questions without collapsing artistic process into pedagogy.[9][10]

This distinction also prevents an inverse mistake. The surviving lessons need not be treated as a dry appendix to the paintings. By asking students to generate forms through operations, Klee had to make tacit choices speakable. He adjusted explanations as the school and its students changed. In some cases, students’ records show where an abstract scheme became comprehensible only when they tried it themselves. The exchange could clarify possibilities for art without every painting serving as classroom evidence.[2][3]

Why did the Bauhaus period end?

By the late 1920s, Klee’s form teaching, specialist weaving course, occasional life drawing and free painting class made a substantial workload. The Bauhaus Kooperation biography explicitly connects that burden with his departure, effective 1 April 1931. He then accepted a professorship at the Düsseldorf Academy, which lasted until the Nazis dismissed him in 1933. The accessible summaries do not permit every motive behind a career move to be reduced to a single cause, and the precise final course schedule remains in question.[1][2][12]

The decade’s legacy is best located in specific documents and specific people. Klee’s dated lectures show a teacher thinking through form and colour. Bergner’s notes show how at least one student received, tested and sometimes struggled with that teaching. The workshop record names other makers whose technical knowledge turned principles into objects. The Pedagogical Sketchbook gave part of the enquiry a public life. Together they show a Bauhaus practice in motion, rather than a fixed set of rules handed down from one famous painter.[2][3][4][11]

Explore the related Paul Klee biography, colours, materials and techniques and teaching notebooks.

Explore selected works from Klee’s much larger oeuvre. Titles without a link have an authenticated catalogue identity but no reviewed article yet.

Artworks directory

217 artworks

NameDateMedium
A Gate1939Painting and mixed media
A Woman for Gods1938Watercolour and mixed media
Ab Ovo1917Watercolour and mixed media
Above Mountain Summit1917Drawing and mixed media
Abstract Trio1923Drawing and mixed media
Acrobats1915Watercolour and mixed media
Actor's Mask1924Painting and mixed media
Ad Marginem1930Drawing and mixed media
Ad Parnassum1932Painting and mixed media
Adventurer Ship1927Drawing and mixed media
Affected Place1922Drawing and mixed media
After a Sketch from Zurich1914Watercolour and mixed media
After Drawing1919Print
After The Floods1936Watercolour and mixed media
All Souls' Picture1921Print
Ancient Harmony1925Painting and mixed media
Angel Applicant1939Drawing and mixed media
Angel Serves the Desired1920Print
Angel, Still Female1939Painting and mixed media
Angelus Novus1920Drawing and mixed media
Animal Terror1926Painting and mixed media
Arab Song1932Painting and mixed media
Archangel1938Painting and mixed media
Architecture1923Painting and mixed media
Architecture of the Plain1923Drawing and mixed media
Around the Fish1926Painting and mixed media
Arrival of the Air Steamer1921Drawing and mixed media
Asiatic God1924Painting and mixed media
Astrological Fantasy Portrait1924Drawing and mixed media
Athlete's Head1932Watercolour and mixed media
Aufgehender Stern1931Painting and mixed media
Autumn Flower1922Painting and mixed media
Bad Band1920Drawing and mixed media
Baroque Centaur1939Painting and mixed media
Before the Blitz1923Drawing and mixed media
Before the Snow1929Drawing and mixed media
Besessenes Madchen1924Watercolour and mixed media
Bird Garden1924Print
Bird Wandering Off1926Watercolour and mixed media
Blossoms in the Night1930Watercolour and mixed media
Blue-Bird-Pumpkin1939Painting and mixed media
Boats in the Flood1937Painting and mixed media
Botanical Theatre1934Drawing and mixed media
Boy in Fancy Dress1931Watercolour and mixed media
Broken Key1938Print
Brother and Sister1930Watercolour and mixed media
But the Red Roof1935Painting and mixed media
C - C = Fisch1931Watercolour and mixed media
Cacti1912Painting and mixed media
Camel (in Rhythmic Landscape with Trees)1920Drawing and mixed media
Captive Pierrot1923Drawing and mixed media
Castle and Sun1928Drawing and mixed media
Cat and Bird1928Drawing and mixed media
Cathedrals1925Watercolour and mixed media
Chalice of the Heart1937Painting and mixed media
Characters in Yellow1937Painting and mixed media
Chosen Site1927Mixed media
Christmas Picture1923Drawing and mixed media
City of Towers1916Painting and mixed media
Clarification1932Painting and mixed media
Collection of Figurines1926Painting and mixed media
Colorful Architecture1917Painting and mixed media
Comedians' Handbill1938Print
Comic Opera Singer1927Painting and mixed media
Composition1939Painting and mixed media
Composition with Figures1915Drawing and mixed media
Composition with the Yellow Half-Moon and the Y1918Watercolour and mixed media
Conch–Still Life II1939Watercolour and mixed media
Cosmic Composition1919Painting and mixed media
Crystal Gradation1921Drawing and mixed media
Dance of the Grieving Child1922Painting and mixed media
Dancing Girl1940Painting and mixed media
Das Licht und Etliches1931Mixed media
Death and Fire1940Painting and mixed media
Death for the Idea1915Print
Demon as Pirate1926Watercolour and mixed media
Diana1931Painting and mixed media
Diavolo Player1923Drawing and mixed media
Die Kapelle1917Watercolour and mixed media
Die Vase1938Painting and mixed media
Doctor1930Drawing and mixed media
Dredger and Sailboat1931Watercolour and mixed media
Ein Tor1939Painting and mixed media
Ein Weib fur Gotter1938Mixed media
Embrace1939Watercolour and mixed media
Episode before an Arab Town1923Print
Equals Infinity1932Painting and mixed media
Eros1923Drawing and mixed media
Error on Green1930Watercolour and mixed media
Evening Figure1935Drawing and mixed media
Falling Bird1919Print
Fermata1932Watercolour and mixed media
Fire Clown1921Watercolour and mixed media
Fire Full Moon1933Watercolour and mixed media
Fire in the Evening1929Painting and mixed media
Fish in the Harbour1916Watercolour and mixed media
Fish Magic1925Watercolour and mixed media
Flock of Birds1917Drawing and mixed media
Flora on Sand1927Watercolour and mixed media
Flower Myth1918Print
Flower Stand with Watering Can and Bucket1910Watercolour and mixed media
Flowering Tree (Abstraction with Reference to a Flowering Tree)1925Painting and mixed media
Flowers in Pots1923Print
Flowers in Stone1939Painting and mixed media
Forest Witch1938Painting and mixed media
Fright of a Girl1922Drawing and mixed media
Fruits on Red1930Drawing and mixed media
Full Moon1919Mixed media
Föhn Wind in Franz Marc's Garden1915Watercolour and mixed media
Garden in St Germain, The European Quarter near Tunis1914Watercolour and mixed media
Ghost Chamber with the Tall Door (New Version)1925Print
Ghost of a Genius1922Drawing and mixed media
Girl in Mourning1939Painting and mixed media
Glance of a Landscape1926Watercolour and mixed media
Gluht Nach1939Drawing and mixed media
Golden Fish1925Watercolour and mixed media
Goldfish Wife1921Watercolour and mixed media
Green Plant, Blood, Louse1924Drawing and mixed media
Hafenbild1918Mixed media
Hammamet with Mosque1914Watercolour and mixed media
Harbour with Sailing Ships1937Painting and mixed media
Hauptweg und Nebenwege1929Painting and mixed media
Heavenly and Earthly Time1927Drawing and mixed media
Heroic Fiddling1938Painting and mixed media
Heroic Roses1938Painting and mixed media
Heroic Strokes of the Bow—Mixed media
Highway and Byways1929Drawing and mixed media
Houses near the Gravel Pit1913Watercolour and mixed media
Howling Dog1928Painting and mixed media
In the Current Six Thresholds1929Painting and mixed media
In the Style of Kairouan1914Drawing and mixed media
Individualized Altimetry of Stripes1930Painting and mixed media
Insula Dulcamara1938Print
Interior with the Clock1913Watercolour and mixed media
Irma Rossa the Animal Tamer1918Drawing and mixed media
Journey in Corsica1927Drawing and mixed media
Landscape with Bluebirds1919Watercolour and mixed media
Legend of the Nile1937Painting and mixed media
Lemon Harvest1937Watercolour and mixed media
Likeness in the Bower1930Watercolour and mixed media
Limits of Reason1927Painting and mixed media
Little Hope1938Watercolour and mixed media
Magdalena before the Conversion1938Drawing and mixed media
Mask of Fear1932Painting and mixed media
May Picture1925Painting and mixed media
Monument in a Cemetery1922Watercolour and mixed media
Monuments at G1929Watercolour and mixed media
Municipal Jewel1917Watercolour and mixed media
Mural from the Temple of Longing Thither1922Print
Nach der Uberschwemmung1936Watercolour and mixed media
New Harmony1936Painting and mixed media
New House in the Suburbs—Mixed media
Old Steamboat1922Drawing and mixed media
On the Edge1930Drawing and mixed media
Once Emerged from the Gray of Night1918Drawing and mixed media
One Who Understands1934Painting and mixed media
Oriental Pleasure Garden1925Painting and mixed media
Park of Idols1939Watercolour and mixed media
Passing by Red Pillars1928Watercolour and mixed media
Persian Nightingales1917Drawing and mixed media
Popular Wall Painting1922Painting and mixed media
Prestidigitator1927Watercolour and mixed media
Rainy Day1931Watercolour and mixed media
Red and White Domes1914Watercolour and mixed media
Red Balloon1922Drawing and mixed media
Redgreen and Violet-Yellow Rhythms1920Drawing and mixed media
Refuge1930Watercolour and mixed media
Rhythmic Rythmical1930Painting and mixed media
Saint of the Inner Light1921Print
Scaffolding of a New Building1930Painting and mixed media
Scholar in Dealing with Stars1926Watercolour and mixed media
Seated Woman1930Drawing and mixed media
Senecio1922Painting and mixed media
Separation in the Evening1922Drawing and mixed media
Sinbad the Sailor1923Drawing and mixed media
Skeptically Smiling—Mixed media
Small House in the Garden City1928Watercolour and mixed media
Small Portrait of a Girl in Yellow1925Painting and mixed media
Southern Gardens1919Watercolour and mixed media
Static-Dynamic Gradation1923Drawing and mixed media
Still Life1927Painting and mixed media
Still Life with Gladioli1932Watercolour and mixed media
Strange Garden1923Drawing and mixed media
Stricken City1936Painting and mixed media
Strong Dream1929Watercolour and mixed media
Struck from the List1933Drawing and mixed media
Structural I1924Drawing and mixed media
Sumpflegende1919Painting and mixed media
Temple Gardens1920Drawing and mixed media
The Arrow before the Target1921Drawing and mixed media
The Barbed Noose with the Mice1923Watercolour and mixed media
The Flora of the Heath1925Watercolour and mixed media
The Goldfish1925Watercolour and mixed media
The Hour Before One Night1940Painting and mixed media
The Man in Love1923Print
The Mask with the Flag1925Mixed media
The Pathos of Fertility1921Print
The Rhine at Duisburg1937Painting and mixed media
The Way to the Citadel1937Painting and mixed media
Three Houses and a Bridge1922Watercolour and mixed media
Tightrope Walker1923Print
Tomb in Three Parts1923Watercolour and mixed media
Tomcat's Turf1919Watercolour and mixed media
Tower in Orange and Green1922Drawing and mixed media
Tree and Architecture - Rhythms I1920Watercolour and mixed media
Tree and Architecture - Rhythms II1920Painting and mixed media
Tropical Dawn with the Owl1921Mixed media
Tropische Dammerung1921Painting and mixed media
Twittering Machine1922Drawing and mixed media
Variations (Progressive Motif)1927Watercolour and mixed media
Ventriloquist and Crier in the Moor1923Print
Viaducts Break Ranks1937Drawing and mixed media
Villa R1919Painting and mixed media
Village Carnival1926Painting and mixed media
Vor dem Blitz1923Drawing and mixed media
Wald-Hexen1938Painting and mixed media
Young Forest1925Drawing and mixed media

Discussion

Klee's teaching survives in notes, student exercises and later memories.

A design prompt could become very different work in a student's hands.

Reader Insights

Close Looking

Which documented lesson makes Klee's ideas clearest to you?

Context

How does a student's textile differ from the diagram that helped generate it?

Open Question

Which class or archive record should be checked next?

Join the Conversation

Share the particular work or source behind your reading.

References

  1. Bauhaus Kooperation, Paul Klee biography (German). Institutional chronology, course and workshop summary, 1925 book, Dessau duties and departure. Its metadata and prose disagree on the exact late-1920 appointment date and some workshop dates; those conflicts are retained above, View source.
  2. Marianne Keller Tschirren, Dreieck, Kreis, Kugel. Farbenordnungen im Unterricht von Paul Klee am Bauhaus, University of Bern dissertation (2011), especially printed pp. 23–31, 82–84, 141–43 and course appendix pp. 193–96 (German). Full relevant passages directly read. She triangulates Klee’s dated notes, correspondence, calendars, student records and earlier scholarship, and marks gaps in semester evidence, View source.
  3. Fabienne Eggelhöfer, “Verschiebung, Drehung, Spiegelung: Lena Bergners Aufzeichnungen aus Paul Klees Unterricht”, Bauhaus Kooperation (2018; German). Full essay read. Uses Bergner’s archive notes, exercises and testimony, distinguishes theoretical teaching from Stölzl’s practical instruction and records contrasting student recollections, View source.
  4. Fabienne Eggelhöfer, “Paul Klees bildnerische Webarchitekturen”, Bauhaus Kooperation (2019; German). Full essay read. Analyses 1927–31 weaving instruction and guards against unproved direct copying from Klee painting to student textile, View source.
  5. Bauhaus Kooperation, Weaving workshop history (German). Source for workshop practice, Gunta Stölzl and the women who studied and made textiles, View source.
  6. Bauhaus-Archiv / Museum für Gestaltung, Musikerinnen und Musiker im Umfeld des Bauhauses (2025), pp. 137, 140 (German). Appointment and first-theory chronology; dated 16 January 1922 Bach teaching diagram. The original diagram is not reproduced here, View source.
  7. Bauhaus-Archiv, Teaching overview (German), and Bauhaus Kooperation, Klee teaching overview (German). Institutional descriptions of the Vorkurs, form teaching and student exercises.
  8. Zentrum Paul Klee, Research and teaching archive (German), with linked digital edition of Bildnerische Form- und Gestaltungslehre. Source for archive scale and digital access. Direct individual folio URLs were not accessible during this research; folio-specific claims above rely on Keller Tschirren and Eggelhöfer, View source.
  9. Keller Tschirren, Dreieck, Kreis, Kugel, printed pp. 82–84, 141–43, for comparisons of colour systems and cautions about equating teaching diagrams and paintings; see reference 2.
  10. The History of Art, Crystal Gradation and Ancient Harmony object pages, with their item-level primary references; Kunstmuseum Bern, Ad Parnassum. Comparisons are chronological and formal, not claims of direct classroom derivation.
  11. Bauhaus Kooperation, Paul Klee. Pedagogical Sketchbook and Bauhaus books list (German/English). Both identify the 1925 publication as Bauhausbücher volume 2.
  12. Zentrum Paul Klee, Paul Klee biography (English), cross-checked with the Bauhaus Kooperation biography for the Düsseldorf move and 1933 dismissal, View source.