This investigation of the encoding features of graphs begins with a description of a cognitive framework which allows designers to factor into the process of designing displays how people interpret the information found and what display properties are responsible for this interpretation. The framework also provides a performance measure for use in…

Advice on the selection of suitable instructional materials to support the chosen method(s) of instruction is offered in this booklet. The first of four sections takes a brief look at the different roles that instructional materials can play in the three main instructional modes--mass instruction, individualized learning, and group learning. The…