Deaf children, seven to thirteen years old, were observed on concrete, transitional and formal operational tasks ranging from dual classification to combinatorial reasoning. Results were related to number of years of schooling. (ST)

Study lends support to the view that the problem with left-right stems from the imperfect mastery of the basic discrimination, not from an inability to deal with the logic of relational concepts. (Author/CB)

An analysis of critical thinking is discussed in terms of conceptual interpretations and through determining the logic of linguistic expressions. (Author/RK)

Attempts to determine the relationship between elementary school teachers' theoretical educational framework and a formal methods course in teaching elementary school science. The initially logically consistent student teachers did not show any change as a result of having the course. The group which had not been logically consistent initially did…

Study attempted to specify two complementary aspects of children's inferential size judgments within the context of Piaget's theory. (Authors)

The theme of the article was to show how children acquire logical structures. Following up these studies on logical structure, another study attempted to ascertain if skills could be learned at times other than when spontaneously acquired. The results showed that the children need help in solving the problems posed. Another method of heuristic…

Shows that, contrary to Piagetian Theory, formal thought in a variety of subject matters is not possible until sufficient requisite concrete background experience in each content area involved has been attained. (MH)

In order to establish a simple, logical relationship between the many elements involved in the new social studies such that they may sensibly be used in the classroom, certain basic questions with answers are spelled out here. (Author/JB)