The relationship between scores on three area conservation tasks and scores on two area measurement tasks, as affected by two sequences of presentation of Piagetian tasks to children in grades one through three, was investigated. The five area tasks were administered individually to 168 children ranging in age from six years five months to nine…

Preservice teachers administered Piagetian tasks to elementary students. On the whole data collected compared favorably with the findings of Renner (EJ 044 727) in showing that students achieved conservation of substance (liquids and solids), length, area, and weight at later ages than stated by Piaget. No significant sex differences were found.…

Piaget's theory of cognitive development is explained, especially in relation to the teaching of elementary school science. Several research projects involving Piaget's theories are reviewed. (MLH)

The purpose was to determine (1) if there was a significant difference in the performance on five science-related Piaget type tasks by fifth graders who were currently involved in different elementary science programs, and (2) if the tasks formed a hierarchical sequence of difficulty for the students. Three groups of fifth graders were studied;…

Piaget's notions on conservation and transitivity are discussed, along with interpretations and experiments by some of Piaget's critics. Several general teaching suggestions also are included. (DT)

A series of learning activities used in grades one and two to teach number conservation and arithmetic are presented in detail. The activity sequence is based on working with one-to-one correspondences for a lengthy period before introducing arithmetic operation. The author claims the approach is very successful. (SD)