1. Demand imposed on primary-school students by geometric models;Bobis;Contemporary Educational Psychology,1994
2. Spatial ability: An information processing approach to psychometric;Carpenter,1986
3. Split attention effects as a factor in the design of instruction;Chandler;British Journal of Educational Psychology,1992
4. The role of spatial representations in complex problem solving;Cooper,1988
5. Children's understanding: Development of mental models;Halford,1993