According to Peirce, diagrammatic constructions are represented by words in a sentence, an algebraic formula, or a graphic display. They are the basis of all valid reasoning and provide significant means for discovering unexpected truths. Sources and uses of diagrams in education are discussed in relation to Peirce's ideas. Nineteen references are…

A discussion of how a Briton's educational level, social class, sex and age all go to determine the degree of linguistic difficulty he finds acceptable in reading matter; and how these determinants of acceptability relate to readability as measured by word and sentence lengths. (Author)

Briefly reviews psycholinguistic research, describes six categories of utterance, and reports on research into the relationship between level of thought and length of speech. Results indicate that both teachers and students take successively longer to express higher-cognitive types of utterances. (EAO)

This discussion of information structures in written texts describes how linguistic analysis of short published reports leads to the presentation of an algorithm that depicts the problem-solving process in terms of a series of evaluative questions. (Author/CHC)