Johannes Itten and his chart for teaching color theory at the Bauhaus Weimar: Farbenkugel in 7 Lichtstufen und 12 Tönen / Colour Sphere in 7 Light Stages and 12 Tones, 1921. Photo Paula Stockmar, Bauhaus Archiv Berlin. Itten is holding the divider for the golden ratio.
Johannes Itten was one of the main pedagogical forces behind the Bauhaus and taught a foundation course in craft through the study of color and form. He originally trained as an elementary teacher before moving on to painting and color theory. During his studies of education and psychoanalyses, Itten began forming his unique theories on the creative spirit and how best to nurture it. A particular influence was Friedrich Frobel, “the inventor of Kindergarten”, whose pioneering ideas included young children’s desire for creative expression and the natural tendency to learn through play. At the time, this was considered groundbreaking pedagogy.
(Source: kaufmann-mercantile.com)