Cognitive development of eighth-grade students, as identified by Jean Piaget, occurs during a time when many of them are transitioning between concrete operations and formal operations where the ability to think in abstract concepts becomes possible. Because of this period of transition, many eighth-grade students find difficulty in demonstrating…

This article describes a problem-solving strategy unit to be used as a supplement to the regular mathematics curriculum at the primary level. Specific teaching steps and examples are given for three developmental stages of thinking: (1) concrete, (2) representational, and (3) abstract. (DB)

Illinois Central College's Development of Operational Reasoning Skills (DOORS) project, which is based on Piaget's developmental theory and learning cycle strategy, is described. The project provides a multidisciplinary freshman core program focusing on the improvement of student reasoning abilities. For each of the six DOORS courses--English,…