Japanese elementary school buildings has been composed of some classrooms for lecture and some special-purpose classrooms for practice. But there is a marked increase in the number of the elementary schools contain the multi-purpose spaces recently. Although many studies are making on the relation between multi-purpose space and classrooms, little is known about that between multi-purpose space and special-purpose classrooms. Through some observations of the learning activities 16 days in 1993 at the school most advanced in informal education, it is clear that the multi-purpose space takes a part of functions for practice space from specialpurpose classroom.