Investigates whether enriching text with analogies, similes, and metaphors has an impact on student cognitive learning and attitudes. Reports no gain on achievement, negative gain on attitude, no gain on proposition recall test, and negative gain on student attention to the text. (YP)

Explains science teachers' perceptions and decisions about the development and implementation of a science/technology/society curriculum. Discusses the teacher interviews based on teachers' decisions. Summarizes five themes: concerns over content, discomfort with grouping, uncertainties about evaluation, frustrations about student population, and…

Described is a cost-effectiveness analysis applied to the question of the probable impact of 69 actions advocated for improving science education. The major objectives and the 11 categories of interventions are discussed in regard to effective schools and implementing educational change. (KR)

Examines 11 elementary science texts in terms of conceptual structure and reasoning demands using concept maps. Reports that (1) the conceptual structures vary widely across texts; (2) most of the structures are well defined; and (3) the reasoning demands are above the developmental capabilities of most of primary-level children. (Author/YP)