Examines strategies used by first grade children in performing a seriation task, using materials varying in length or weight. Most first-grade children employed a concept-task-strategy in serially ordering objects by length and weight. In addition Piaget's observation that length can be serially ordered before weight was upheld. (CP)

Research was done to investigate the interfunctional relationships between a child's ability to order a set of objects and the development of language descriptives used to describe differing aspects of a group of objects which had been ordered. Results show that mean age of concrete operation acquisition is 7.1 years. (Author/JB)

A total of 132 volunteer 10th and 11th grade students participated in an experiment to investigate two variables of computer-based adaptive instructional strategies for concept learning. The first variable tested the hypothesis that selection of number of examples according to on-task information is more efficient than selection according to…

This study examined the effect of an innovative teaching activity to improve concrete operational thinking skills with preschoolers in Head Start programs. A "learning set" of classification games and seriation games was used to teach the oddity principle and insertion into a series. These games were played with the children using toy ponies and…