A multi-use balance beam apparatus is formed by cooperating elements which may be arranged to form a rocker, see-saw, merry-go-round, balance beam, and walking rails. A pair of balance beams, each in the form of a pair of parallel spaced apart rails are constructed to cooperate in a variety of configurations. Additional elements including a locking piece, turning pedestal, and rail retaining guide cooperate with the balance beams to achieve the different functions. The device is useful for child development exercises and a variety of recreational activities.