The question of how children solve force and motion problems in computer simulations without explicit knowledge of the underlying physics was investigated. Keystroke sequences made by children were saved and analyzed, and children were interviewed to understand their perception of the relationship between keyboard input and on-screen action. (CW)

Compares knowledge and attitude levels of elementary, secondary science, and other secondary teachers on water resources. Evaluates an interactive computer simulation, the "Water Resource Management Simulator" (WRMS), as a training tool for inservice teachers. Users of WRMS exhibited higher knowledge scores than nonusers. No differences…

This study explores a learning model which suggests that a concept is acquired first through manipulation of concrete objects followed by transformation of the concrete objects into semi-concrete representations, followed by internalization of the concept through abstract representations. Microcomputer simulations of manipulative activities were…

Trying to change the predictive rule for the sinking and floating phenomena, students have a great difficulty in understanding density and they are insensitive to empirical counter-examples designed to challenge their own rule. The purpose of this study is to examine the process whereby students from sixth and seventh grades relinquish their…

There are a number of ways in which the educational applications of computers can be categorized. This document focuses on the use of computers in science teaching. It differentiates between such terminology as tutor, tool, tutee, tutorial dialogue, revelatory use, conjectural use, and emancipatory use. The major portion of this paper is a…

Because density is unobservable and must be inferred from knowledge about weight and size, it is a difficult concept to teach and learn. Even after traditional instruction, many students still have an undifferentiated concept that mixes characteristics of both weight and density. In this study, researchers tested the effectiveness of a unit they…

Discusses the importance of the use of models in modern science. Suggests that models can make a significant contribution to the teaching of science and mathematics. Explains that representative models, analogue models, logical models, and theoretical models are most commonly used models in science and mathematics. (TW)

Many feel that an advantage to using computer simulations in science teaching is that they give students the opportunity to witness or perform experiments which might otherwise be too expensive, time consuming, or dangerous for them to do. Simulations attempt to mimic the kind of experience students get in a laboratory and help students learn new…

Density is the first intensive physical quantity students encounter that can be understood in terms of an underlying model, the particulate theory of matter. Learning about density provides students with explanations for a range of phenomena such as sinking and floating, and changes of state. Teachers report, however, that density is a difficult…

The Educational Technology Center (ETC) has devoted the last five years to studying ways of using the computer and other information technologies to teach understanding in science, mathematics, and computing in the nation's elementary and secondary schools. The Center's research has focused on targets of difficulty, topics and concepts that are…