Used realistic models of turning situations to study second, fourth, and sixth graders' concepts of turning and bending. Found that young students viewed turning (knob, doll, and door) as a movement, and bending (road bends) as a configuration. Many did not spontaneously interpret turning as a configuration or bending as a movement. Explored…

Examines spatial concepts required by young children for the understanding and manipulation of turn commands in Logo, and reviews the literature on children's Logo learning and the psychological-cognitive development of spatial concepts. Geometric concepts, alternative frames of reference, and the use of Turtle graphics are also discussed. (39…

Research findings related to children's concepts of length, area, volume, weight and time are reviewed. Implications for instruction in measurement of these qualities are discussed. (SD)

After a general discussion of the purposes and methods of teaching measurement, teaching ideas for twelve specific measurement objectives are provided. (SD)

The investigation reported pursued the possibility of cross-cultural differences between American and Swiss children in terms of how they perceive and conceptualize spatial figures. There was statistical evidence that the preferences of American and Swiss children were different when compared as a whole or by sex and test version. (MK)

The growth of spatial awareness and representation was studied in children between ages five and nine. A group of thirteen tasks was administered to subjects three times with periods of approximately six months among sessions. The tasks were selected to measure understanding of projective spatial properties (straight line trajectories,…

Tests seven- , 10- , and 13-year-olds for developmental differences in processes and strategies involved in geometric matrix solution and the relationship between strategy differences and item complexity. (AS)