A SERIES OF EXPERIMENTS TO BE PERFORMED WITH SMALL APPARATUS BY STUDENTS IS PRESENTED. PREPARATION OF DATA SHEETS AND ANALYSIS OF FINDINGS ARE ENCOURAGED. IN THE CATEGORY OF MATTER AND MOLECULES, THE CONCEPT TO BE DEVELOPED IS THE DETERMINATION OF WHETHER THERE ARE EMPTY SPACES IN AIR AND IN LIQUIDS. EXPERIMENTS WITH INERTIA, THE LAW OF SPRINGS,…

Suggestions for studying the topic of variation of individuals and objects (balls) to help develop elementary school students' measurement, comparison, classification, evaluation, and data collection and recording skills are made. General suggestions of variables that can be investigated are made for the study of human variation. Twelve specific…

Described are two hospital-based laboratory exercises which helped students perceive the relationship between the principles of microbiology and the practice of nursing. The exercises involved an environmental study focusing on problems of nosocomial infection and a study of patients hospitalized with infectious diseases. (Author/MS)

Three classic visual toys are discussed and instructions are given for their construction. These are moire patterns, kaleidoscope, and stereoscope. (MP)

With the use of graphs, the phenomenon of deep ocean water mixing is discussed. Research methodologies and findings are detailed. (CP)

Analyzes the distributions of particles and particle flux in the Atlantic Ocean. (CP)

Describes a method for using ferrofluids to study steady-state resonant vibrations at liquid-air interfaces. (SL)

Reviews Galileo's experiments with falling bodies conducted at the Tower of Pisa. Results indicate it is doubtful that he could have obtained the results claimed in the legend. (SL)

Describes a quantitative experiment of measuring the characteristics of a cylindrical Langmuir probe and the ion density in the flame plasma of a seeded propane flame. (SL)

Help children identify and use two basic elements in the scientific process. (Editor)

Describes an experiment in which students use ion exchange chromatography to separate a mixture of chloro complexes of transition metal ions and then use spectrophotometry to define qualitatively the efficiency of the ion exchange columns. Background information, materials needed, and procedures used are included. (JN)

Provides directions for basic science experiments which demonstrate the rain cycle, fundamentals of cloud formation, and testing for the presence of acidity in local rainwater. Describes materials required, step-by-step instructions, and discussion topics. (NEC)

Natural gas from regular commercial lines contains enough carbon-8 and above hydrocarbon contaminants to serve as a satisfactory sample for breakthrough experiments. Procedures used, typical results obtained, and theoretical background information are provided. (JN)