Describes a field trip activity to measure changes in elevation across the dunes of a barrier beach, measure wind velocity along the transect line, and observe the distribution of ground cover in the study area. Discusses equipment, materials, procedures and follow-up activities for each study. (CW)

Presents a simple model that can help students think about evolution and better understand the gradualist and punctuationist macroevolution approaches. The model also improves instruction for concepts of mutation, selection, fitness, extinction, and origin of life. Describes an IBM computer program for instruction in these areas. (PR)

The study of starlings in the urban environment integrates nervous regulation, the senses, and animal behavior, while also providing an excellent example of how the biology of an animal is related to the demands of the physical environment. (PR)