In his last book, "Toward a Logic of Meanings" (Piaget & Garcia, 1991), Jean Piaget describes how thought can be categorized into a form of propositional logic, a logic of meanings. The intent of this article is to offer this analysis by Piaget as a means to understand the language and teaching of science. Using binary propositions, conjunctions,…

Mathematics and science are important for success in school, but learning mathematics and science can be a difficult task to some students. Efforts to improve students' learning of school mathematics and science have led to reform efforts in curriculum and instruction over the past decades (e.g., National Council of Teachers of Mathematics [NCTM],…

Discusses the nature of technological literacy, considering its relationship to science education, mathematics education, and computer science education. Indicates that technological literacy is a skill and an attitude which is basic to contemporary society. Problems related to cognitive development are noted. (JN)

A recently developed and validated group assessment instrument, the Piagetian Logical Operations Test (PLOT), is described focusing on how teachers can use PLOT in improving learning in science classrooms. PLOT is an untimed 51-item instrument consisting of 13 content, 18 decision, and 20 reason items. (MP)

Presents a developmental taxonomy which promotes sequencing activities to enhance the potential of matching these activities with learner needs and readiness, suggesting that the order commonly found in the classroom needs to be inverted. The proposed taxonomy (story, skill, and algorithm) involves problem-solving emphasis in the classroom. (JN)

Described are ways in which curriculum in science and mathematics may be shaped to the adolescent. Several examples relate to cognitive development, neurological functioning, physical changes, social evolution, and moral growth of the adolescent. (DS)

Described is a three-phase model for teaching problem solving to the middle school student. Phases include cue attendance, thinking aloud, and developing diagrams of steps to solutions. Because middle school students are in a transitional period in their cognitive processes, implementation of problem solving skills seems appropriate. (Author/DS)

Discusses the advantages of using discrepant events in elementary school science classrooms in terms of motivation and problem solving skills. Describes the materials, procedures, and reasons behind five discrepant activities. (YP)