An inexpensive DNA preparation is presented which starts with commercially available frozen packed bacterial cells. Methods for analyzing the DNA are also presented, along with physical chemical experiments which can be done using the purified DNA. (BB)

Describes a program designed to give graduate teaching assistants preservice instruction. Learning modules focus on teaching skills. (MA)

This paper reports an experiment in the teaching of the kinetic molecular theory to nonscience majors by the inquiry method. It allows the student to develop an essentially correct view of gases, liquids, and solids on the atomic or molecular level, and illustrates how one can draw conclusions about the molecular level by simple visual…

This study developed and validated an inventory to measure students' attitudes toward and interest in laboratory work in high school chemistry. Factor analysis provided some evidence that interest in and attitude towards laboratory work in high school chemistry is not unidimensional, as it has been assumed to be. (BT)

Describes how a sample of iodine-131-labelled tin (IV) iodide can be used to estimate the mass of tin (IV) iodide present in a mixture with sodium chloride, by isotope dilution analysis. (MLH)

Mathematically treats chemical, osmotic, and electrochemical equilibria using the virtual work principle. (MLH)

Briefly describes eleven standardized exams, covering both college and secondary levels, that have been released by the Examinations Committee of the American Chemistry Society. Also announces new graduate level placement exams in analytical, organic, and physical chemistry. (MLH)

The author describes (1) various parameters of "practical work" found in the teaching of secondary level chemistry, and (2) changes occuring within this fundamental approach to teaching and learning. Included is a model for study of the "practical work approach." For journal availability, see SO 505 539. (Author)

Summarizes a study based on a questionnaire addressed to chemists employed in industry to determine the types of duties performed by individuals with the master's degree as their highest degree. Surveyed were their perceptions of the adequacy of their training, and the need or value of the degree in their career. (MLH)

Describes an apparatus that can be used to prepare air-sensitive or water-sensitive samples for melting point determinations. (MLH)

Describes the construction and operation of a temperature programmer; it can be built for less than $100 and can be used with any gas chromatograph that uses a variable resistor to control oven temperature. (MLH)

Discusses the concepts involved in constructing a meaningful free energy plot for a chemical reaction and how these concepts are sometimes insufficiently represented in textbooks. (MLH)

Discusses the preparation of compounds representing six oxidation states of manganese; demonstrations involving these compounds are described. (MLH)

Discusses the philosophy and operation of a chemistry course that emphasizes the impact of chemical science on society and the education of scientifically literate citizens. (MLH)

Describes an experiment in which students answer a set of questions about the structure of a simple molecule given the computer output of a Patterson map obtained by X-ray diffraction. (MLH)