The use of graphing skills in the science classroom is described, including prerequisite knowledge, bar graphs and histograms, line graphs, and interpreting line graphs. Graphing skills are utilized as a reinforcement for process skills activities such as data collection and data interpretation. (DS)

Describes a laboratory activity which can be done with equipment normally available for introductory college courses. It measures the ratio of the radioactivity per unit mass of a unicellular alga to the radioactivity per unit mass of the medium in which it grows. (HM)

Describes the development of an educational nature trail. Discusses objectives, methods of use, and possible evaluation techniques for such a trail. Suggests activites. (Author/MA)

Describes an interactive Fortran computer program which provides an exercise in the identification of bacteria. Provides a way of enhancing a student's approach to systematic bacteriology and numerical identification procedures. (Author/MA)

Describes a simple seismograph which can be built quite easily and is sufficiently sensitive to record earthquake waves at home. (HM)

Suggests: (1) activities to enhance interest during observations of animals in the elementary science classroom; (2) possible questions to ask during these observations; and (3) sources for observing animals such as pet stores and farms, as well as bringing pets into the classroom. (DS)

Presents an experiment on the bending of light in a medium with a continuously varying index of refraction. Several theoretical approaches for the analysis of this experiment, designed for college physics students, are also presented. (HM)

Describes an advanced undergraduate physics experiment which permits the measurement of ultrasound velocity and absorption in liquid systems. A description of the tasks the student is expected to perform is also included. (HM)

Discusses a demonstration in which the near and far focusing distances of a student volunteer are measured and his or her glasses prescription is computed. (HM)

Describes a physical chemistry experiment involving the analysis of the spectrum of benzene vapor in which the resolution in terms of wave length is a limiting factor. (CS)

He-Ne laser experiments suitable for an undergraduate laboratory are described. The topics covered are cavity stability, self-mode-locking coherent interactions between pulses and laser medium, and spontaneous transverse mode locking. (Author/DS)

Describes ways in which physics-learning activity packets can be used by high school students participating in trips organized by other departments. Provides an example of physics activities incorporated into an airplane trip to Disney World. (CS)

Suggests that students be given opportunities in practice sessions to acquire skills necessary in interpreting data. Biological significance is discussed. An example of a practice session is provided. (CS)

Suggested are a variety of ways in which the newspaper can be utilized to teach energy related concepts in the science classroom. Suggestions include using various parts of a newspaper to create energy-related activities. (DS)

Described is a preschool science activity in which students use shell collections. This activity demonstrates how language development and reading readiness skills are interrelated with science. Prereading and reading activities are described involving the students in direct interaction with the shell collection. (DS)