Two surveys were carried out to help increase knowledge of current graph usage in science. A detailed analysis of all graphs in one volume of the journal "Science" revealed that 30 percent had errors. Graphs are used more in some disciplines than in others; a survey of 57 journals revealed natural science journals use far more graphs…

This bilingual instructional text, one in a series of six texts covering various vocational and technical topics, provides secondary level English and Spanish instruction in drafting. Addressed in the individual units are the following topics: safety, drafting tools and techniques, sketching, geometric construction, working drawings, sectioning,…

Theorems about the hyperbola which are ordinarily introduced in calculus courses can be proved without using the calculus. (SD)

By converting functional equations to cylindrical coordinates, plotting points on cardboard, and connecting these points with thread, one can make three-dimensional string figures illustrating the behavior of functions for which the derivative is not always defined. (SD)

The author presents a method of producing a scatter diagram of data on two variables with Pearson product moment correlation of .50; he also provides a proof that the method will work for any number of data pairs. (SD)

A discussion of autosegmental phonology (AP), a theory of phonological representation that uses graphs rather than strings as the central data structure, considers its principal constraint, the "No Crossing Constraint" (NCC). The NCC is the statement that in a well-formed autosegmental diagram, lines of association may not cross. After…

The past decade has seen a substantial growth in methods and schemes for the display of multivariate data. This paper encompasses a sketch of the history of multivariate displays, from the pre-Columbian Quipu to Chernoff's Face; examines a number of techniques; describes their construction; illustrates their use; and comments on their efficacy.…

Although computer graphics professionals usually consider only technical graphic design issues, recent improvements may make the only limiting design factors the user's purpose, imagination, style, and taste rather than computer hardware or software technology. Computer graphics designers can be helped to avoid pitfalls by understanding the visual…

Several activities are described which give children experience with body measuring and estimating. Ratio and proportion and graphing are also involved. Samples of individual worksheets are provided as is a poster. (LS)

This mathematical model is intended to be a tool for the monitoring of the bargaining process and to provide the ability to predict the form of bargaining outcomes given certain initial conditions. It applies to situations in organizations in which the conflict between the expressed desires of interest groups are settled by a bargaining process…

This study examined cooperative planning for change between educational linkers and 11 schools. Qualitative field research methods were used to determine the effects that school context factors, the school-agency relationship, and linking agent behavior had on project outcomes. Results showed that the school context and the school-agency…

THE PROBLEM WAS TO DETERMINE WHICH COMBINATIONS OF VERBAL AND GRAPHIC MATERIALS LEAD TO THE MOST EFFICIENT LEARNING. NINETY-ONE UNIVERSITY COLLEGE STUDENTS WERE DIVIDED INTO EIGHT GROUPS WHICH READ THE SAME INSTRUCTIONAL MATERIAL (ON ELECTRICAL CIRCUITRY) IN VERBAL, GRAPHIC, VERBAL-GRAPHIC, OR GRAPHIC-VERBAL FORM. HALF OF THE SUBJECTS WERE…

This is part one of a three-part SMSG calculus text for high school students. The aim of the text is to develop some of the concepts and techniques which will enable the student to obtain important information about graphs of elementary functions. Chapter topics include: (1) polynomial functions; (2) the derivative of a polynomial function; and…