160 Grade 1 children were tested for their ability to conserve multiple spatial relations. An analysis of task-related errors supported Piaget's distinction between perceptual and representational space as well as the importance of eye-hand movement and the relative position of objects in the perceptual field. Children with a preference for their right hand and left eye showed more success in reproducing spatial relations than children with right-hand and right-eye preference. The results were interpreted as supporting a visual-imagery mode of representation but not the importance of verbal knowledge or activity. The significance of mixed lateral dominance to spatial orientation was seen to be consistent with neurophysiological evidence.