This paper shows the basic concept of Functional Modelling in mathematics education which has become more and more important in recent years. Hence it is necessary to think about suitable graphical methods to explain the fundamental idea of a function and its influence on values and other functions. PROGRAPH diagrams are a potentially good way to…

Describes design, implementation, and evaluation of an interactive video lesson in preparatory algebra based on Gagne's instructional design principles, which was developed at the University of Utah. Highlights include learning objectives; program design elements, particularly use of reference files; areas addressed in formative evaluation; and…