Discusses an experiment designed to give students a feel for the way in which theoretical models evolve. Students are given a system unknown to them and asked to develop a consistent model which fully explains all their observations on the system. (Author/GA)

Principles, experimental procedures, results, and discussion of this method are included here. The method was used in undergraduate laboratory courses in Toulouse, France. (BB)

The rhizosphere is the area directly surrounding the roots of a plant and an area of tremendous microbial growth. This article described techniques for studying this soil biome. Illustrations are included. (MA)

Describes an experiment used to demonstrate the relationship among hypertonic, hypotonic, and isotonic solutions and provides and open-ended research opportunity for additional individual investigation by students. (Author/MA)

Describes one approach to supplying engineering and computer science educators with an economical portable digital systems laboratory centered around microprocessors. Expansion of the microcomputer based laboratory concept to include Learning Resource Aided Instruction (LRAI) systems is explored. (Author)

Discusses how the audio-tutorial system originated, how it is currently implemented at Purdue University (independent study sessions, general assembly sessions, and small assembly sessions), and some factors which may determine the effectiveness of its application. (VT)

Presents guidelines for the construction and maintenance of a life science culture center with mobile and stationary units. (CP)

Describes a chemical laboratory safety course presented at Western Michigan University. (SL)

Presents details of demonstrations illustrating cathodic protection using a photovoltaic source and optical rotation. (SL)

Indicates some of the information that may be obtained from a binary solid-liquid phase equilibria experiment and a method to write a computer program that will plot an ideal phase diagram to which the experimental results may be compared. (Author/CP)

Describes the laboratory procedure suitable for an introductory organic chemistry procedure. (CP)

Discusses an experiment involving a linear chain of falling dominoes. The time for a chain of N equally spaced dominoes to fall is measured and a plot is made between the time and N. The experimental data are compared with the predictions of theory. (Author/GA)

Describes an experiment to verify the Compton collision formula and the angular dependance of the Klein-Nishina formula. Equipment used is a 1-mCi(137)Cs source, 2x2 in. NaI detector and a multichannel analyzer. Suitable for honor undergraduates. (Author/GA)

Described is the use of molecular model kits in high school biology class and gives a laboratory unit for studying molecular structures of fats, proteins, and carbohydrates. (BB)

Presents an experiment for a physical chemistry course designed expecially for students majoring in the life sciences. (SL)