A series of eight manuals dealing with the triad text characteristics--learning processes--learning outcomes are being prepared for use by authors and editors as an aid in the design and writing of educational texts. These manuals are based upon a model for the functioning of text characteristics which in turn is part of a decision model for the…

Organized in three sections, this report presents the first case study from a project aimed at developing prototypes of ideal textbook chapters. The report (1) discusses the Ideal Text Project, in which a number of researchers in instructional science have been challenged to design a textbook chapter that incorporates the design features they…