Explains how the surface of a freshly sliced potato can be used for a variety of enzyme action experiments including the influence of pH on enzyme action, the enzyme denaturation potential of boiling water, the inhibition of enzymes by heavy metals, and the effects of salt concentration on enzyme effectiveness. (PR)

Presents names, phone numbers, and addresses for obtaining space resources used in classroom instruction. (PR)

A sample of grade 11 and 12 Canadian students (n>2000) responded to a national survey concerning the epistemology of science. Results revealed preconceptions held by students involving the nature of science, scientific assumptions, values in science, conceptual inventions, the scientific method, consensus making in science, and characteristics…

Visual elements in articles in "Science" and "Newsweek" magazines are analyzed and compared using linguistic concepts of interpersonal, ideational, and textual meta-functions. Relationships between text and visual, between gloss and visual, and among the visuals themselves are examined. Visuals in academic text are mainly…

Presents those books that were selected as outstanding children's science trade books published in 1998 for elementary (K-8) students. Annotated bibliography entries list publication information, a brief description of the work, and the National Science Education Standards to which the book relates. Entries are classified under the categories of…

Explores high school students' and preservice teachers' knowledge of light, vision, and related topics before and after commonly practiced instruction. Suggests a hierarchical structure to represent the collective conceptual knowledge of students and teachers in terms of facets and schemes of knowledge. Makes suggestions for designing instruction…

Describes an innovative approach used to help high school students develop critical thinking and real-world problem-solving skills while learning about indoor air quality. (Contains 13 references.) (Author/WRM)

Describes advantages and disadvantages of microcomputer uses in the classroom. Provides a listing and a brief description of exemplary microcomputer-based laboratories (MBLs) used by high school students and preservice teachers. (ZWH)

Describes the use of a supercomputer in chemistry and physics instruction. The computer is used by high school students to create high quality, nearly 3-D graphic images of scientific phenomena. (PR)

A recent study indicated students in the United States do not understand basic math and science as well as students in other countries, and will not be prepared for decision making in a largely scientific and technological world. Suggests ways for parents to emphasize science at school, at home, on school field trips, with science fairs, and with…

The particulate nature of matter is identified in science education standards as one of the fundamental concepts that students should understand at the middle school level. However, science education research in indicates that secondary school students have difficulties understanding the structure of matter. The purpose of the study is to describe…

This qualitative study examined the role of discourse (verbal elements of language) and Discourse (nonverbal elements related to the use of language, such as ways of thinking, valuing, and using tools and technologies) in the process of group knowledge construction of mechanical engineering students. Data included interviews, participant…

The present study makes use of the capabilities of computerized environments to enable simultaneous display of molecular representations that correspond to observations at the macroscopic level. This study questions the immediate and long-term effects of using a multimedia instructional unit that integrates the macroscopic, symbolic, and molecular…

The Eden Project in Cornwall sets out to educate about the interdependence of plants and people. Its tropical and Mediterranean biomes are housed in the largest "greenhouses" in the world, which serve as a backdrop to plants that grow in the temperate zones of the world, grown in Eden's outdoor landscape. Eden has aroused worldwide…

The study presents the frequencies of students' conceptions of growth and cell division before and after one hour of instruction. The investigation supplements qualitative results by directing attention to those conceptions which might occur most frequently to students: teachers can then concentrate their preparation on practical requirements. A…