This document describes a system that has been developed to use a digital computer graphics terminal for interactive analysis of piecewise continuous systems of nonlinear differential equations. This program allows even a novice user to freely investigate the behavior of control systems and solutions of differential equations by changing initial…

The development and capabilities of an interactive preprocessor program with graphics for an existing three-dimensional finite element code is presented. This preprocessor program, EDGAP3D, is designed to be used in conjunction with the Texas Three Dimensional Grain Analysis Program (TXCAP3D). The code presented in this research is capable of the…

Outlines a program for implementing the Logo computer language in the classroom. Presents five introductory lessons that can be used with upper elementary students and some introductory comments about planning. (SRT)

Discusses constructive ways to use microcomputers as educational aids. Areas considered include software packages with graphics capabilities to help students visualize their work, programs fostering skill development (including problem-solving), microcomputer rentals, use of computers to learn programing languages, and others. (JN)

Reviews an authoring system for courseware development (Applesoft Basic) consisting of a programed template allowing preparation of instructional units composed of text, questions, and graphics. A higher-priced version includes a game. Geology, oceanography, space science, meteorology, human/plant anatomy, and cells/genetics diagrams are available…

It is felt that all the basic programing concepts can be taught by giving students experience with graphics. Students are viewed to be working on problems that truly interest them, rather than on the standard fare presented in most courses. A description of a class and a graphing program are included. (MP)

The integrated compiler of the Turbo Pascal environment allows the execution of a completed program independent of the developed environment and with greater execution speed, in comparison with LOGO. Conversion table of turtle-graphic commands for the two languages is presented. (Author/YP)

Shows a series of Euclidean equations using the Euclidean algorithm to get the greatest common divisor of two integers. Describes the use of the equations to generate a series of circles. Discusses computer generation of Euclidean circles and provides a BASIC program. (YP)

Discussed are three examples of computer graphics including biomorphs, Truchet tilings, and fractal popcorn. The graphics are shown and the basic algorithm using multiple iteration of a particular function or mathematical operation is described. An illustration of a snail shell created by computer graphics is presented. (YP)

Suggests computer graphing as a topic for computer programing. Reviews Apple II computer graphics information and gives suggestions for writing the programs. Presents equations to help place information onto the screen with proper coordinates. (MVL)

SIGMA (Simulation Graphical Modeling and Analysis) is a computer graphics environment for building, testing, and experimenting with discrete event simulation models on personal computers. It uses symbolic representations (computer animation) to depict the logic of large, complex discrete event systems for easier understanding and has proven itself…

This document consists of nine issues of the National LOGO Exchange Newsletter (NLX). Each issue contains several articles as well as regular features and departments. The lead articles in this volume are entitled: (1) "Twenty Powerful Ideas" (Molly Watt); (2) "Multiple Turtles without Sprites" (James Hurley); (3)…

This paper describes Macintosh features which can be used in writing interactive programs. A program written in Microsoft BASIC (version 2.0 interpreter) is described which is used to produce plots of electric field produced by two-dimensional arrangements of point charges. It demonstrates the use of pull-down menus, windows on the screen, the…

This project report details the design of an interactive authoring system for the development of computer assisted instructional (CAI) software. This system is possible because the development of more powerful computing and software systems has facilitated authoring systems which allow the development of courseware in an interactive mode and…

Intermedia, a hypermedia system developed at Brown University's Institute for Research (Rhode Island) in Information and Scholarship, is first described, and then used as a case study to explore a number of key issues that software designers must consider in the development of hypermedia document systems. A hypermedia document system is defined as…