Describes classroom activities and models for migration, mutation, and isolation; a diffusion model; Bernoulli's principle; sound in a vacuum; time regression mystery of DNA; seating chart lesson plan; algae mystery laboratory; water as mass; science fair; flipped book; making a cloud; wet mount slide; timer adaptation; thread slide model; and…

Reviews three educational computer software products: (1) a compact disc-read only memory (CD-ROM) bundle of five mathematics programs from the Apple Education Series; (2) "Sammy's Science House," with science activities for preschool through second grade (Edmark); and (3) "The Cat Came Back," an interactive CD-ROM game designed to build language…

Presents activities from an interdisciplinary project studying local watersheds that incorporate a broad spectrum of disciplines including science, math, geography, English, computer science, and political science. Enables students to understand how precipitation changes chemically as it interacts with the soils and human-altered landscape as it…

Describes an experiment that uses the Tain Electronics TCS2 interface to investigate the relationship between force, mass, and acceleration. Discusses the following topics: assembling the system, forces in the system, software, and data analysis. (JRH)

Examines the public's lack of understanding and interest in science. Places much of the blame on the perception of science as a dense yet pristine discipline divorced from everyday concerns. Criticizes the concept of science as independent of social construction and argues for instruction emphasizing relationships between science and society. (MJP)

Describes a successful effort by an elementary school and community to convert a classroom into a school science laboratory and stock the laboratory with science materials and apparatus. (PR)

Describes the creation and use of a science magazine, "Science Stew," that circulates among 17,000 elementary students and 900 teachers in a school district in Nova Scotia. The magazine highlights the wide variety of science that occurs in the district and provides opportunities for students and teachers to experience, discuss, and write about…

Preservation of our wetlands has been an issue for many years. Today, despite current laws and those adopted 200 years ago, the wetlands remain insufficiently protected and developed. A holistic guide and suggestions for the classroom are provided to aid in efforts directed at wetland education, research and management. (ZWH)

Discusses the constraints placed upon humans by natural environmental capacity laws. Using analogies of exponential growth in economics and ecology, the author argues that exponential growth needs to be seen and taught as a severely time-limited process, for which costs must be paid. (ZWH)

Describes a project making a model of the celestial sphere that will show how the ancients imagined the universe. (PR)

Describes science experiments with the enzyme lactose, which is available commercially as Lactaid and Dairy Ease. Experiments show how the rate of reaction of lactose converted to glucose and galactose is influenced by temperature, pH, and substrate concentration. (PR)

Presents an activity that allows students to experience the type of discovery process that paleontologists necessarily followed during the early dinosaur explorations. Students are read parts of a story taken from the "American Journal of Science" and interpret the evidence leading to the discovery of Triceratops and Stegosaurus. (PR)

Presents activities to familiarize junior high school students with the processes behind and reasons for volcanism, which is generally a planet's way of releasing excessive internal heat and pressure. Students participate in the creation of four important volcano-related simulations: a lava flow, a shield volcano, a cinder-cone volcano, and a…

Presents three patterns found in math for elementary students. Spirolaterals are patterns made by repeatedly tracing a series of three numbers in four directions on dot paper. Tessellating can be a combination of teaching about patterns, geometry, and art. The King's Problem requires recognition of a problem to find a solution. (PR)

Advocates an approach to teaching environmentally related studies based on constructivism. Presents an activity that makes use of data on chemicals in the water supply, and discusses obtaining and using data sets in the classroom. (LZ)