Description: The Broad Brown Stair consists of a series of ten graduated prisms all the same length but with cross-sections from 1cm³ to 10cm³. One of the classic Montessori piece, which is used to develop visual and muscular discrimination of size in two dimensions, whilst the third remains constant, and to develop co-ordination and fine motor control.

Size: 1*1*20cm, 2*2*20cm, ....10*10*20cm

Age: 3+