Presents a laboratory experiment on determining the molecular weight of an unknown molecule by using gel filtration chromatography. Describes the procedure and lists required materials. (YDS)

Presents five plant science stories and examines the real truth behind them. (Contains 28 references.) (ASK)

Presents a quantitative laboratory experiment to aid students in understanding how to account for a loss of species biodiversity due to habitat fragmentation. (ASK)

Describes a program in which students and teachers travel to learn about different countries, cultures, and customs in hopes of gaining a better understanding of the world and to promote world peace. (ASK)

Discusses the use of small enclosures for experiments in a local lake. Describes the effects of lake inhabitants grazing on small zooplankton such as Daphnia, copepods, and rotifers. (ASK)

Presents a lab exercise that introduces students to the concepts of community structure, succession, and adaptation by having them make detailed observations from two or more stone walls differing in some historical, environmental, or physical variable. (ASK)

Presents a quick and easy demonstration of species-area relationships. Focuses on common cynipid rose galls which can be found over much of North America. (ASK)

Describes a laboratory experiment in which students explore how a microbe makes cellulose. (ASK)

Presents an exercise that provides students with opportunities to experience scientific inquiry skills. (ASK)

Presents a laboratory exercise on the capabilities of plants to ward off the insects that want to eat them. (ASK)

Discusses the use of epidemiology as an introduction to useful aspects of biology, mathematics, and simulation skills for kindergarten through university undergraduate students. (Contains 20 references.) (ASK)

Describes an approach that provides mathematical tips and helpful suggestions for presenting the Hardy-Weinberg equilibrium to predict allele frequencies, phenotypes, and genotypes in populations. (ASK)

Describes a study on establishing the current status of and exploring the relationships among the variables of high school biology teachers' acceptance of evolutionary theory and teacher understanding of the nature of science. (Contains 23 references.) (ASK)

Surveys 15 introductory biology textbooks for their presentation of the scientific method. Teaching the scientific method involves more than simplified steps and subjectivity--human politics, cultural influences, and chance are all a part of science. Presents an activity for students to experience the scientific method. (Contains 34 references.)…

Describes two activities that use jelly beans to teach the three fundamental modes of natural selection, the theory of competitive exclusion, and how competition structures communities. (ASK)