One of the most celebrated artists of the 20th century, Paul Klee was also a prolific teacher, serving as a faculty member of the Bauhaus school between 1921 and 1931. Promoting a theoretical approach to artmaking, the painter taught a variety of courses across disciplines, from bookbinding to basic design, and left behind over 3,900 pages in lecture notes. These documents, partly compiled in Klee’s Pedagogical Sketchbook (1925), reveal the artist’s innovative and unusual lesson plans, which often provided students with a step-by-step approach to artistic expression. We’ve pulled some of his key lessons about art and design. Let’s start with the basics.