Examines the theoretical framework of psychologist Lev Vygotsky with regard to communication tools, cognition, and socio-cultural effects on these tools. Reports the results of several studies of students' word meanings of division by adapting Luria's instruments for alternative assessments. Discusses the implications of socio-cultural diversity,…

Reviews a subjective exercise completed by students at the end of each of six units in an introductory organic chemistry course. Argues that instruction should be shaped by Ausubel's concept of meaningful learning. (DDR)

Recommends that teachers address the challenge of making science fun and interesting by employing space sciences to convert the ordinary into the extraordinary through imagination, community involvement, and hands-on activities. (DDR)

Suggests that teachers use assessment in two equally important ways: (1) to periodically evaluate students' cumulative knowledge and understanding, a process known as summative assessment; and (2) to continually evaluate students' progress in learning, known as formative assessment. (DDR)

Details an activity in which students create and study miniature impact craters in the classroom. Engages students in making detailed, meaningful observations, drawing inferences, reaching conclusions based on scientific evidence, and designing experiments to test selected variables. (DDR)

Addresses the need for organizing a science curriculum around contextual settings and science stories that serve to involve and motivate students. Outlines a proposed program of activities in terms of a sequence of theoretical and empirical activities that involve contextual settings, science stories, large context problems, thematic teaching, and…

Reports on research consisting of compiling a contrastive verb valency dictionary of Dutch, French, and English whose main strength lies in depicting semantic differences between its entries and conceptual differences between languages. Using these analyses, one can start to discern nuclear and peripheral meanings, analyze possible meaning…

Presents a conceptual framework for analyzing students' mathematical understanding, reasoning, problem solving, and communication. Analyses of student responses indicated that the tasks appear to measure the complex thinking and reasoning processes that they were designed to assess. Concludes that the QUASAR assessment tasks can capture changes in…

Discusses the implications of a research study of more than 2000 students aged 11 to 15 that explored why the students interpret algebra in certain ways. Recommends strategies that can help teachers deal with prior knowledge that students may bring to their study of algebra. (DDR)

Proposes activities that promote students' awareness of the structure of the information involved in their everyday activities, and builds the concept of function from students' mental representations of phenomena. Recommends the use of spreadsheets to provide external representations of these functions. (DDR)

As more medically fragile and health-impaired students are included in the educational system, teachers are increasingly likely to confront the death of a student. This article identifies developmental levels of understanding death, factors which affect grieving, and symptoms of grief demonstrated by children and adults. Recommendations for…

Describes an investigation-based, lecture-free first-year algebra course in which students are responsible for compiling their own textbooks. Discusses the purpose and procedures of the activity. Includes student worksheets. (KHR)

Examines existing research literature which suggests that introducing computing tools can help students focus on the relevant aspects of a problem, function at higher levels of geometric understanding, distinguish between drawings and constructions, and develop and reason about conjectures on the basis of generalization of patterns. (KHR)

Investigates the use of mathematical modeling tasks in 11- and 12-year-old students and the development of mathematical thinking skills using practical modeling activities. Analyzes the development of students' mathematical thinking with interviews of a form of dynamic assessment. Reports that some students proved to be naturally mindful and…

Examined role of social-referential context in 13- and 18- month-olds' mapping of verbal and nonverbal symbols to object categories. Found that infants at both ages showed evidence of learning both words and sounds when the experimenter produced a label within a familiar naming routine, and failed to learn when labels were emitted from a baby…