Presents the mechanistic ideas underlying reactions between nucleophiles and carbonyl compounds as well as some popular misconceptions. Relates reactions of carboxylic acid derivatives to those of aldehydes and ketones. Discusses leaving group ability and the ability of carbonyl oxygen to accept a negative charge. (Author/MVL)

Sixty hearing-impaired students, aged 12-22, studied one of four instructional formats describing basic science concepts. Comprehension gains were measured using a pretest-posttest procedure. Formats which featured highly pictorial content and simplified English produced significantly higher mean gain scores than formats with less pictorial…

Examines the use of a ratio table for developing students' conceptual understanding of rational number. The ratio table is an alternative to cross-multiplication and can utilize both additive and multiplicative strategies. It organizes numbers and keeps track of operations and results, which aids the teacher in assessment. (MLB)

A discussion of intonation instruction in second-language teaching looks at the role, objectives, and scope of such instruction; the tools teachers need to accomplish it (background in theory, practical guidelines, a method, appropriate research, and equipment); and the need for and possible design of related software. (MSE)

Video Information Systems (VIS) is fiber optics network that connects campus classrooms to VIS central library. Remotely controlled by instructors, VIS incorporates use of number of audiovisual materials and can be used in cross-cultural training in which visual aids assist in showing cultural differences. VIS assists in education of future…

Contends that, despite increasingly sophisticated means of communication, posters remain a powerful cornerstone of many government advertising campaigns. Describes the beginnings and evolution of Smokey Bear from a World War II homefront poster to an ongoing advertising success. (CFR)

Examines the emerging form of text on the World Wide Web and how it is influencing reading, in particular reading by non-native readers of English. Focus is on the visual representation of text structure. (Author/VWL)

Investigates the effects of audio and text density on the achievement, time-in-program, and attitudes of 134 undergraduate students. Data concerning pre-existing computer skills/experience and demographic information were also collected. Findings have implications for the use of audio, text and graphics in the design of computer-based instruction.…

Investigates the effects of computer-assisted video-based anchored instruction on promoting students' attitudes toward mathematical instruction and problem-solving skills. Examines the effects of different media attributes on students' mathematical achievement and attitudes in a situated learning environment. Findings suggest that anchored…

Discusses how to use video in classroom projects. Highlights include: mastering simple camera work; using video as a teaching tool for demonstration, modeling, and student feedback; electronic publishing; and steps in pre- and post-production. Sidebars outline six reasons for using multimedia in the classroom, and solutions for dealing with…

Argues that, even for young children, analogies offer conceptual models for supporting the development of understanding. Compared children's understanding of current electricity after instruction with and without the inclusion of analogies. Children receiving the analogies exhibited a broader understanding, especially concerning the process of…

An interactive videodisc (IVD) system enables a student to practice skills that would otherwise be too costly or dangerous to attempt. IVD designers, utilizing the principle of hypermedia, stimulate students with realistic imagery and sound and branching options. The computer is able to evaluate the student's entry skills, identify deficiencies,…

Describes how instruction and exposure contributed to the development of oral proficiency in English as a Second Language in mutually exclusive learning situations in Nepal. This study finds that both instruction and exposure contribute to second-language acquisition, the former promoting accuracy, the latter promoting fluency. (Author/VWL)

This article presents a portrait of practice of one social studies methods professor engaged in teaching his course and analyzes the choices the professor makes during the semester. These choices are linked to his philosophy of social studies education with particular attention paid to his passionate belief in the American story as the core of…

The purpose of this qualitative inquiry was to determine fraternity men and student athletes' perceptions of a commonly used rape-prevention program. Participants saw "The Men's Program" and then participated in 60-90 minute focus groups assessing whether their attitudes and behavior would change, what about the program led to that change, and…