A large proportion of the work done up to now on gender differentiation in schools has had a secondary school emphasis, (Delamont, 1980; Mahony, 1973), and it would seem logical to ask whether or not some of the gender differentiation manifest at this stage is not, at least in part, the outcome of differences which have become established much earlier in the children's educational career. The need to investigate this possibility has led in the last few years to more interest in gender differences in the primary school (Clarricoates, 1978; French & French, 1984; Hartley, 1980; May & Ruddock, 1983). The research reported here forms part of a wider study of gender differentiation in the early years of schooling. The provision for play, and the way in which children make use of the facilities provided, were among a number of aspects of nursery and infant education observed and analysed. We came to the view that there were important differences in the play patterns of girls and boys, and that these had possible long-term educational implications. Play is widely recognised as a major component in early education and so forms an important part of the school day for young children (Armstrong, 1980; Marriott, 1985). It is argued that it helps them to develop a wide range of social and intellectual skills, and for this reason a variety of types of play materials is normally provided in their classrooms. As well as this, the physical environment is often planned to facilitate play activities, and infant teachers are encouraged to develop techniques to help children to interact creatively and imaginatively with the classroom environment (Bennett, 1984).