Supplemental materials are presented that can be used with any standard Spanish textbook in order to help students develop communicative competency by listening, understanding, and speaking in situations that involve the use of language outside the classroom. Career situations have been selected which require the use of Spanish in metropolitan…

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)