This document, Part II of a two-part study, is the summary chapter of a report which sought to ascertain the relationship of grade level, achievement level, sex, and method of presentation to the various bases by which children classify geometric concepts. Two tasks, administered consecutively to 96 subjects in grades five, eight, and eleven,…

This study was designed to determine whether advance organizers in the form of visual aids might serve the same function as Ausubel's verbal advance organizers. The basic design of the study consisted of a 4 X 3 X 2 ANOVA factorial design. Ninety-six eighth-grade students were involved in the study. One group was exposed to a physiographic diagram…

Tested was the hypothesis that science instruction based on task analysis will lead to the acquisition of the ability to perform certain Piaget volume tasks which have been characterized as requiring formal operations for their solutions. A Test on Formal Operations and a Learning Hierarchies Test were given to fourth- and sixth-grade students in…

Recognition errors of children in Grades 2, 4, and 6 were examined. Subjects learned words under intentional or incidental instructions and were tested immediately or 48 hours later. Subjects had to choose a target word from among acoustic, conceptual, associative and neutral distractors. The immediate recognition of 2nd-grade subjects was…

Forty-two college undergraduates, 28 women and 14 men, were classified as analytic, categorical, or relational according to their responses on the Sigel Cognitive Style Test and were randomly assigned to verbal or pictorial conditions. The subjects were presented a series of slides involving the paired association of 9 three-letter nonsense…

To investigate how a child organizes new objects and how categories function for a chid, twelve 6- and twelve 8-year-olds were individually given several sorting tasks involving 21 three-dimensional nonsense objects. The child was exposed to all the objects; three objects were pointed out and withdrawn; and then the child was asked to describe…

Two experiments investigate the effects of mode of presentation and number of categories on 4-year-olds' proportion estimates. Experiment I compares simultaneous and successive presentations of proportion problems using two categories of elements. The subjects were 40 children chosen randomly and tested individually. Four problems were presented…

This book deals with the development of the child's notion about space. The authors' investigations have been concerned with the order and manner in which children begin to imagine or visualize the various spatial entities and spatial characteristics of objects. They report that the child first recognizes various objects by sense of touch alone…

Reported is a study to determine the relative effectiveness of a meaningful concrete and a meaningful symbolic model in learning a selected mathematics principle. Subjects were from a second grade population and they were assigned to three treatments. Students assigned to Treatment 1 received instruction in the principle with a meaningful symbolic…

This study was designed to identify those science concepts and mathematical skills that may be the source of student difficulty in learning chemistry as developed by the Chemical Education Materials Study (CHEMS). The instruments utilized were four Achievement Tests prepared by CHEMS. Each test item was analyzed to determine the concepts and/or…

Although critical thinking is a pervasive educational objective, it remains inconsistently and imperfectly defined. The present paper attempts to sort out direct attempts at defining critical thinking. Such definitions are classified as representing one of three differing points of view: critical thinking as evaluation, critical thinking as…

This document describes the Conceptual Learning and Development (CLD) model of concept formation. According to the CLD analysis, a single concept is learned in the following successive levels of attainment: concrete, identity, classification, and formal. The four levels are considered applicable to concepts that are defined (or could be defined)…

Reported is an investigation to determine the nature and extent of student misconceptions in chemical equilibrium and to ascertain the degree to which certain misconceptions are related to chemistry achievement and to performance on specific tasks involving cognitive transformations characteristic of the concrete and formal operational stages of…

This document describes experimental attempts to teach young children the concepts of conservation of number. Subjects were 48 nursery school children who were divided into experimental and control groups. All children were individually pretested for conservation, after which the experimental group alone received two training sessions. The…

In two separate reports the founding and set up of Project CORES was outlined, and then a specific research project was described. Project CORES began in the efforts of three men who felt a more systematic investigation of simulation effects was needed. The criteria felt most sensitive were the physiological activities of galvanic skin potential…