Reviews some research on, and provides a mathematical model for, the decline in bacterial populations in a closed system as a consequence of accumulating toxins and decreasing food. (AL)

Describes the use of multiple choice tests as a method of motivation, using items that are open to differing interpretations, and deciding on the correct" answer by class vote after discussion. (AL)

Provides a list of birth dates of scientists born in January. Describes the use of these dates, displayed with the birthdays of students, to stimulate interest. (AL)

Summarizes the present understanding of lunar structure, emphasizing the role of the NASA moon explorations. (AL)

Man can aspire to control his evolution and direct it towards goals which he finds good, salutary, worth living for....The one most 'natural' thing for man is to modify nature by means of his knowledge." (Author/AL)

Explains the place the values of truth, freedom, skepticism and dissent, originality, order, and communication play in science, and states implications of these values for science curricula and instructional practices. (AL)

Lists 20 declarations concerned with teachers' and students' attitudes, beliefs and values that if followed, will create a humanistic learning and foster its life-long survival." (Author/AL)

Describes an earth science project completed by students in an American school in Saudi Arabia. (AL)