Describes models constructed of flat pieces cut from sheet plywood, hardboard, or plastic to replicate the shape of the main symmetry planes of molecules. Patterns for the model components are given as well as a list of pieces required to make various models. (BB)

Discussion on the proper use of the chemistry terms "dissociation, hydrolysis, ionization, oxidation and reduction" is presented. (CP)

Discusses uses of programmable pocket electronic calculators in the secondary level classroom. Uses discussed include: grading, laboratory, exercises, computing T-scores, and a quantitative approach to chemical equilibrium. (SL)

Discusses how a chemistry teacher can help the student learn the technical vocabulary of chemistry. (MLH)

Discusses an explanation for secondary science students of the concept of additivity of oxidation and reduction potentials, especially in relation to the nonapplicability of Hess's Law. (MLH)

Summarizes 11 papers presented at the Fourth Biennial Conference on Chemical Education that dealt with the uses of history in teaching chemistry. (MLH)

Presents questions and answers about the fluoridation of water regarding the compounds added to drinking water in the fluoridation process, how raw water is tested for fluoride content, and how fluoride reacts with tooth enamel. (CS)

Reports the findings of a study done to compare student attitude and achievement in two different chemistry curriculum programs. Results indicate no significant difference in either attitude or achievement scores on the exam administered. Neither program was found to be better than the other. (MA)

Discusses a laboratory experiment in which uranium is isolated by the reduction of uranyl acetate. (MLH)

Describes the process of self-regulation, which Piaget hypothesizes governs all intellectual growth, and suggests a way in which homework problems in a chemistry course can be used to provide students with an opportunity for self-regulation. (MLH)

Discusses methods and exercises appropriate for use in a secondary school chemistry classroom to enhance mastery of skills in these three areas: communication, mathematics, and problem solving. (CS)

A discussion of problems students have with the concept of percent, with special emphasis on the use of percent in elementary chemistry. (BB)

Reviews a game for teaching electronic structures of atoms. (SL)

Presents responses to an earlier report concerning a procedure for the derivation of the Ideal Gas Law from Charles', Boyle's, and other gas laws. Logic errors and solutions that work are discussed. (CS)

Describes methods for teaching the mole concept, including analogous calculations involving household objects, and the use of a cardboard wheel showing the interrelationships between moles, molecular weight, and the gaseous molar volume. (MLH)