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)

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 ways to examine leaf structure and shape using fractal geometry. Students can test hypotheses using the leaves of replicated plants to look for non-linear trends in leaf shape along the stems of plants, across species, and under different environmental growth conditions. (SAH)

Describes an innovative model for improving the teaching of evolution in high school biology courses. Combines the teaching of evolution with both a modern view of the nature of science and the use of humans as the primary case study for understanding evolutionary concepts. Requires consistent use of student-centered activities. Contains 20…

Presents an exercise that demonstrates the chromosome-gene-protein connection using sickle-cell anemia, a genetic disease with a well-characterized molecular basis. Involves connecting changes in DNA to protein outcomes and tying them into the next generation by meiosis and gamete formation with genetic crosses. Motivates students to integrate…

Discusses the common misconception persistent in high school and college level introductory biology texts that "dark reactions" of the Calvin cycle actually occur in the dark. Explains that they are indirectly dependent on the presence of light for their activity. (ASK)

Explains the concept of stretch reflexes to students using a mechanical model. The model provides a dynamic multisensory experience using movement, light, and sound. Describes the construction design. (SAH)

Provides laboratory exercises that demonstrate two genetic concepts: the difference between a genetic selection and a genetic screening experiment, and the relationship between phenotype and genotype. (SAH)

Presents a game that was created to loosely simulate the process of genetic material exchange and to illustrate how two simple sets of genes can lead to much variability. (ASK)

Suggests that students who reason with only concrete thinking patterns may become formal thinkers through the use of the following instructional pattern: (1) the introduction of an undifferentiated whole, (2) differentiation of the whole through concrete experiences, (3) invention of symbolic notation, (4) application of concepts which lead to…

States the procedure for isolating actinomycetes from soil and testing for antibiotic growth. (LS)

Presented is a laboratory exercise that utilizes the natural yeast carbonation method of making homemade root beer to study fermentation and the effect of variables upon the fermentation process. There are photographs, a sample data sheet, and procedural hints included. (Author/MA)

The Systems Alternatives Project is an attempt to develop open classroom alternatives within a modular scheduling system. Biology students are given both action and test objectives that emphasize individualization. Structure of the project is detailed and an attempt to analyze the project evaluation data statistically is included. (MA)

Discusses the history of human ecology, providing a definition of this area of study. Also discusses human ecosystems as applied ecology and the values and ethics of the human environment. (JN)

Describes some laboratory projects to enable high school students to learn about bromelin, a protein-digesting enzyme. (PS)