It has been determined that the drawings, photographs and pictures related to the subject of the continuity of the tangent function on page 68 of the Ministry of National Education's twelfth-grade mathematics textbook contradict principles 1, 7 and 10 of Yanpar's (2007) teaching material development principles. According to these principles,…

A learner verification and revision (LVR) process attempts to discover difficulties learners experience in using instructional materials and to formulate possible ways of modifying the instructional materials to eliminate the difficulties. It is a means of ensuring useful learner input into the prepublication development and postpublication…

In response to the need for a system of control over the academic quality of distance education texts, this article proposes a methodological model based on criteria that evaluate written materials based on their instructional quality, design, and production. A discussion and figures evaluate educational aspects of content, communication,…

There have been a great many good and varied textbooks in the history of education. For example, there was L.F. Magnitskii's "Arithmetic," L.N. Tolstoy's "Primer," and the Bible, which can also be thought of as a textbook. None of them is like the others at all. Each one is suitable for dealing with its own objectives in the…

A model for developing instructional analogies was used to produce experimental treatments that included text from a high school biology textbook to which was added extended verbal analogies written by the researcher linking each of two biology concepts to analogous familiar concepts. The control treatment was text from the biology textbook…