Described is a simple demonstration of fermentation. The materials needed, the basic experimental set-up, and various projects are outlined. Included are a diagram of an apparatus for measuring carbon dioxide production and a table showing typical results of the effect of pH on fermentation. (RT)

Described is a tilting cage used to record the activity of a mouse over a 24 hour period. The construction of the apparatus, methods used and data analysis are discussed. Follow-up class activities are suggested. (CW)

Described is an activity used to introduce the anatomy of the skeletal and muscular systems. A teacher conducted, video enhanced demonstration and a student activity are discussed. Included is a sample student laboratory paper. (CW)

Describes a demonstration of Coriolis acceleration. Discusses two different meanings of "Coriolis" and two causes of Coriolis acceleration. Gives a set-up method of the demonstration apparatus by using a rotary disk with rubber tubing for tap water, switches, lamps, battery, and counterweight. Provides two pictures with operating method.…

Describes an experiment for determining the refractive index. Discusses the experiment procedure and mathematical expression for calculating the index. Provides two geometrical diagrams and a graph for determining the index with a typical data. (YP)

Reports on dietary substances which act against cancer-causing agents. Indicates that adapting a lifestyle which combines reduced fat intake with increased fiber-containing foods will reduce the risk of some common cancers. Provides teaching strategies and activities to help students analyze their lifestyles for a reduction in cancer risk. (RT)

Outlines a three-day unit for presenting biotechnology. States that the approach surveys the processes of enzyme restriction, ligation, transformations of recombinant plasmids, and gel electrophoresis. Diagrams accompany the article. (RT)

Discusses image reflection in a plane mirror. Illustrates several cases of the reflection and points out the possibility of confusing students by using the term "lateral inversion." (YP)

Presents activities based on readings from ChemEcology that incorporate student writing with thinking skills as part of a reading/writing portfolio. Helps students to develop a broader understanding of chemistry, the chemical industry, and the environment. (JRH)

Describes a five-step plan of action, formulated by students, to rebuild a pond ecosystem. Steps include cement/rocks, soil/sand, water, producers (autotrophs), and consumers (heterotrophs). (JRH)

Presents an integrated approach that helps students understand difficult science concepts. Involves counteracting children's confusion over certain concepts, confronting children's misconceptions through inquiry, and presenting a multitude of experiences that challenge children's erroneous beliefs. Presents an example of applying this approach to…

Describes the planning and conducting of snow sled competitions as a means to teach concepts in classical mechanics. (JRH)

Presents a one-day, integrated activity in which a class monitors several students simulating a NASA space-shuttle flight. Includes space-shuttle crew application and space-shuttle time line. (MKR)

Presents a two-part activity which gives middle-level students concrete experiences with two different aspects of the concept of diffusion. (MKR)