Instructional variables were manipulated to determine whether they influence the level of perceptual analysis. The relationships of perceptual analysis to concept learning and evaluations of the instructors were also examined in the study. (Author/GK)

Presents the major assumptions of cognitive-developmental theory on social reasoning processes. Provides a selective review of research on social reasoning in various domains and discusses implications of the cognitive-developmental analysis of social reasoning for argumentation theory. (JMF)

Younger and older children were asked to label pictures of nonprototypic, container-like objects in an effort to test Nelson's theory regarding the primacy of the functional core in young children's meaning structures. Contrary to expectations, the older, intermediate age children were influenced more by functional context than were the younger,…

Two studies indicate that Oksapmin children progress from premediational to mediational phases in their use of body parts to compare and reproduce number and that this change generally occurs prior to the development of concepts of number conservation. A third study shows that this general change is manifested in culturally specific ways.…

A number of general ideas intended to be helpful in analyzing differences in concept images among individuals are formulated. These ideas are applied to the specific concepts of continuity and limits, as taught in the secondary school and university. (MP)

Reported is a study to determine whether the use of analogies over a wide variety of topics in high-school chemistry classes for the entire school year would improve chemistry achievement, and to determine whether there was a difference between concept and formal students in their use of analogies. (Author/DS)

Examines the extent to which qualities three and five year-old children attribute to an infant depend on whether the infant is identified as a girl or a boy. Major findings indicate that both three- and five-year-old children responded in a significantly stereotypic manner based on the gender labels provided, regardless of the infant's actual…

A didactic principle of operative concept formation is described and explained. It is argued that this principle meets current demands for practical geometric activities with concrete forms and for the exploration of the primordial relation between geometry and reality. (MK)

Presented is a list of developmental and sequential skills and concepts for preschool through grade 6 students, which can serve as a general guide to presenting and reinforcing globe and earth science basic ideas and related activities. (Author/KC)

The article presents a case study of the educational training program used with a 10-year-old (when first seen) learning disabled boy. The study covers the teaching methods used during a three-year period and includes followup data for over 12 years from the onset of therapy. (PHR)

Shortcomings of management information systems in managerial functions are often attributed to differences between "left brain" activities performed by machines and "right brain" activities performed in decision making. It is argued that academic management information systems should incorporate and recognize both kinds of activity. (MSE)

Describes a study designed to compare the gradual development of children's understanding of shadows with Piaget's stages, categorize pupil responses in the shadow tasks, identify typical pupil responses in each category, and enumerate curriculum implications from the investigation. (GS)

Explores the meaning which children attach to time. Offers possible definitions of time and questions the reliability and validity of the standard unit of time as used in school laboratories. (GS)

Described are activities using paper plates with dots drawn on them which place a heavy emphasis on matching and ordering sets, on developing mental images of sets, and on perceiving sets of a certain size as composed of smaller subsets. Also suggested are activities involving numerals. (Author/TG)

A simple enumeration problem from some research on problem solving is used to illustrate the contention that conjecture and proof have a central place in mathematics teaching. (Author/TG)