Several student-authored computer programs are presented which do advanced plot routines. They are remarkable in that they are able to plot a function expressed in polar coordinates on a teletype. Some plot routines developed by the Project Solo staff are also presented. They are designed to be used with a Hewlett Packard 7200 A plotter connected…

Discusses various aspects, features, and uses of the Logo programing language. A comparison (in chart format) of several Logo languages is also included, providing comments on the language as well as producer, current price, number of sprites and turtles, computer needed, and whether debugging aids and list operations are included. (JN)

Presents activities and program listings to print ASCII characters, examine the "IF" command (Pascal), change colors of a word on the screen (Atari), and to create a drawing tool for making designs (Logo). Also presents an activity on dummy sorting. (JN)

Discusses activities for counting using FOR/NEXT commands, finding number of letters in words using LOGO, generating random numbers on the TRS-80 (program listing included), and examining mistaken predictions. Includes the article "Animating Graphics in BASIC" by Ellen Joslin (program listing included). (JN)

Reviews Apple-II versions of "CyberLogo Turtle" and "Delta Drawing." Focuses on special features, educational value, design quality, written materials, and ease of use, pointing out strengths and weaknesses. Both programs are given high rankings for criteria reviewed. (JN)

Discusses a computer program which converts TRS-80 programs into Applesoft Basic. Although the complete program is listed, a disk containing the binary files necessary for the conversions is available (current cost $10.00) from the author. (Author/JN)

The current use of microcomputers in the British educational system seems dogged by a mainframe philosophy. As a consequence, the educational potential of microcomputer peripherals has not been carefully considered. Research is urgently needed in this area so that decisions are made on strong educational and technical grounds. (Author/LLS)

The interactive system for creating graphic displays that is described is presented as one solution to the problem created by the lack of complementary firmware or software to make the graphic capabilities of many current terminals easily accessible to the instructional programmer. The use of this system by the Digital Equipment Corporation's…

A general description is provided of the "geometric dictionary," a graphic display aid, used by the Computer-Assisted Instruction Laboratory at the Pennsylvania State University. The purpose of the description is to enable the reader to duplicate and use the dictionary on any cathode ray tube terminal of the IBM 1500 system. The major…

An On-Line Modeling System (OLMS) which should be particularly useful to the biomedical community is described which utilizes a process called "overlaying" to simplify loading and executing programs. OLMS has been constructed and implemented as an interpreter; that is, a program that translates and then executes each source statement in…

An existing computer program for computing multiple regression analyses is made interactive in order to alleviate core storage requirements. Also, some improvements in the graphics aspects of the program are included. (JKS)

Author describes a new use for a computer in a computer-aided graphics course. (PG)

A comparison between computer and student solutions to a location problem indicates a possible strategy utilizing planner-computer collaboration. (RA)

Provides Logo activities designed for adults and children to use together. Although activities are designed for Terrapin/Krell Logo, modifications are provided for use with Apple Logo or TI Logo (Texas Instruments). "Bugs" are introduced in one activity to demonstrate how they can lead to unexpected results. (JN)

A theory of the planning and debugging of computer programs is formalized as a context free grammar, which is used to reveal the constituent structure of problem solving episodes by parsing protocols in which programs are written, tested, and debugged. This is illustrated by the detailed analysis of an actual session with a beginning student…