Discussed is the importance of valence bond theory on the quantum-mechanical theory of chemical structure and the nature of the chemical bond. Described briefly are early VB theory, development of VB theory, modern versions, solid-state applications, models, treatment in textbooks, and flaws in criticisms of valence bond theory. (KR)

Analysis of the cultural content of Spanish textbooks used in New York secondary schools revealed that the majority of Spanish-speaking countries and Spanish-speaking groups within the United States were underrepresented. Photographs and references tended to depict the middle and upper classes, and few references were made to poverty,…

Examined is the extent to which trends found in high school biology textbooks are also found in earth science texts. Procedures, book lists, and summaries are presented. It is recommended that more emphasis be placed on the theory of evolution in future editions of earth science textbooks. (CW)

Described are features of a theoretical model for fluid pressure. Analyzes six introductory physics textbooks based on an introduction and meaning of the pressure concept; characteristics of pressure; and liquid as a pressure transmitter. Presents three models of pupils' conceptions. (YP)

Indicates and describes items that are incorrect in textbooks and a teacher edition of Discover SCIENCE for K-6. (YP)

Describes the Soviet educational system and physics textbooks and compares them to their American counterparts. Seventeen references are listed. (YP)

Analyzes high school economics textbooks through an examination of the questions that textbooks traditionally address about economic production: What, how much, and how will something be produced, and who gets the product? Considers teachers' relationships to economic textbooks and courses. Concludes that textbooks should be more relevant to…

Reviews the results of a study of the quality of basal reading textbooks and a survey of primary and secondary school teachers' perceptions of their quality. Considers the ways in which the textbook adoption process affects content and urges teachers to become more involved in this process. (DMM)

Presents a strategy to improve students' comprehension of content material by having them read, discuss, and give written responses to items pertaining to short content texts. (MG)

Examines form and content of American Indian authored selections in South Carolina's high school literature anthologies. Results show only 36 percent are contemporary. The sample of traditional genres lacks balanced representation and does not reflect regional distribution of American Indians. Development of evaluative criteria specific to…

Presents an example that illustrates the connection between taxation of private goods or services and provision of public goods or services. Demonstrates that the burdens of taxation in the private sector can in theory be offset by gains in consumer surplus in the public sector, providing a more balanced view than can be found in many introductory…

Discusses criteria for writing, designing, and selecting a physics text including topics covered, target students, diverse problems, and focused content. (YP)

Stating that the primary function of textbooks is to transmit quantity and quality of knowledge, Woodward argues that photographs and other design features should be relevant to the topic, extending learning beyond the written text. Presents recommendations for evaluating the instructional quality of textbook photographs. (GEA)

Comments on the importance of teaching about state and local government, pointing out that it is not emphasized in college introductory U.S. government courses. Argues that the major reason for this lack of instruction is due to scant coverage in U.S. government textbooks. Suggests ways to incorporate this topic into introductory U.S. government…

Maintains that teachers and textbook graphics follow the same basic pattern in illustrating changes in demand curves when product prices increase. Asserts that the use of computer graphics will enable teachers to be more precise in their graphic presentation of price elasticity. (CFR)