To determine whether practice was consistent with recommended research methods, this study examined 130 studies reported over a 5-year period in the "Journal of Research in Science Teaching." Results show that appropriate generalizations beyond the confines of the reported studies may be impossible in most (64%) of the studies.…

The objectives of this study are: (a) elaboration of a history and philosophy of science (HPS) framework based on a reconstruction of the development of the periodic table; (b) formulation of seven criteria based on the framework; and (c) evaluation of 57 freshman college-level general chemistry textbooks with respect to the presentation of the…

Reports on a study to determine the effects of the presentation of questions inserted into texts for students in introductory biology. Results indicated that students reading the text with questions at the beginning of the paragraph scored significantly higher on achievement tests than the students reading without questions. (TW)