Investigates the linguistic and cognitive aspects of the mastery of the time conjunctions "before" and "after" by young children. (EKN)

To investigate whether children who had been in a bilingual instructional program for three years or less would have some cognitive advantages over those in monolingual programs, 96 (50 percent male, 50 percent female) first to third graders from Edmonton (Alberta) were tested in 1979. The children in bilingual programs outperformed their…

Presents results of intensive clinical interviews with 11 high school chemistry students representing a broad range of achievement levels as selected from 180 students who completed a written test upon completion of an instructional unit on chemical change. Results indicate that students commonly experience difficulties in chemical knowledge,…

In every school there are bright, motivated students who experience success in every field of academic endeavor except mathematics. These students are defined as dyscalculics, or learning disabled in mathematics. Piaget's model for cognitive development was used in a study of students evidencing this condition. The purpose of the study was to…

Twenty-three high school biology students were individually administered three conservation tasks (weight, volume, volume displacement). During one semester, they were examined over the course material using published Biological Sciences Curriculum Study (BSCS) Blue Version examination questions which were previously classified as requiring either…

Some evidence supports the hypothesis that formal operational reasoning ability (at least that measured by Piagetian tasks) is a unified process. The purpose of this research was to determine: (1) if conservation tasks, such as conservation of number, liquid amount, weight and volume, are unifactor; and (2) if conservation tasks form a scale of…

This study was designed to determine whether chronological age, the number of permanent teeth erupted, or the combination of the two would predict a child's readiness for formal arithmetic work. Sixty-four children were randomly chosen and three phases of testing conducted. The findings did not support the use of the number of teeth erupted as a…

Over a period of three years a group of 510 rural children participated in a study of visual perceptions, including eye motor coordination, discernment of figures in a ground pattern, form constancy, position in space, and spatial relations, as measured by the Frostig Visual Perceptions Test. Visual perceptions of children of other cultures were…

Approximately 1,225 Mexican American and Anglo American children in grades 1-6 (ages 6-14) from California, Colorado, New Mexico, and Texas were tested using school achievement and IQ standardized tests and four Piagetian-derived measures (Cartoon Conservation Scales, Water Level Task, Figural Intersection Test, and Serial Task). The field study's…

In this study an attempt was made to obtain a developmental dimension for estimating longitudinal development on the basis of cross-sectional data. To check the validity of this approach, the cross-sectional data were compared with true longitudinal data. Forty-three public school children were given a series of conservation tasks in four…

This report is the initial overall summary of a comprehensive analysis of children's logical concept attainments and memoric abilities and deals exclusively with the initial and second year's assessment data. The focal point for this normative investigation is the concrete operations period spanning the years of middle childhood. The measurement…

Describes three case studies of the use of the Learning in Science Project (Energy) in New Zealand. Themes discussed include systems undergoing change, defining initial and final conditions, energy as a nonmaterial factor of change, forms of energy and conservation of energy. Mentions other issues and research. (CW)

Describes a common misconception in the study of mechanics. Cites textbooks as being in error for equating velocity components along the string because the string does not remain taut. Discusses the typical textbook approach to a problem of this nature and the misconception that pervades textbooks in the British Isles. (CW)

Study investigated the relationship between children's (N=66) length conservation status and ability to acquire specific length measurement skills, and examined the interaction between mode of instruction (manipulative, graphic, and abstract) and conservation status. The expectation that length conservers would outperform nonconservers on…

Outlines a simple classroom demonstration that illustrates Piagetian conservation. Piagetian conservation refers to the illusion of an increase in mass by changing an object's form. This demonstration, done by forming an ellipse with an extension cord, shows that college students are as susceptible to this effect as are young children. (MJP)