Berlin children working with the "Broad Stair," the "Tower" and the "Long Stair". Postcard published by the DMG (German Montessori Society), around 1927 [Photograph: Clara Grunwald.] The "Broad Stair" consists of ten wooden prisms, decreasing in thickness by regular increments. The "Tower" consists of ten solid wooden cubes painted pink. The largest cube is 10 cm long, the smallest 1 cm. The longest of the ten red rods is one metre in length; each of the others decreases by ten centimetres - T. Müller, R. Schneider, Lehrmaterialien 1913-1935. Möbel und Architektur. Techning Meterials 1913-1935. Furniture and Architecture, München, Prestel Verlag, 2002, p.91

Category: Montessori schools