The authors illustrate the magnitude and application of the concept of a "googol" (ten raised to the one hundred power) in searching for entities that exist in such number. (MN)

Discusses a study that examined which reasoning patterns are necessary for success in high school chemistry. Based on student (N=170) scores from the "Classroom Test of Formal Reasoning," it was revealed that students who use formal reasoning patterns are capable of greater achievement in chemistry. (ML)

This article brings together the principles of designing Likert attitude scales and demonstrates the procedure through the development of a chemistry attitude scale. Design procedures and validity and reliability of the scale are each discussed, with a data summary for the 20-item chemistry scale. (MNS)

Part one of a three part report on the historical development of curriculum guidelines for the instruction of chemistry in secondary schools. Part one covers the period 1893-1920. Parts two and three appear in November and December issues of School Science and Mathematics. (SL)

Presented is the 1921-1945 portion of a three part presentation outlining the effect of major committee reports upon secondary school chemistry teaching objectives during the period 1893-1975. (SL)

Methods for determining the radius of an atom are described. Unlike a previous article which approached the problem from an elementary perspective, this article examines a progression of increasingly sophisticated determinations. (CS)

Presented is the third part of a three part report describing the contributions of major committee reports to secondary teaching of chemistry during the period 1893-1975. This third part covers the period 1947-1975, and includes a brief summary of the entire three part series. (SL)

Describes a chemistry curriculum development program for nonscience majors being developed in Israel, which emphasizes flexibility in the development and in the final course products. (SL)

Discusses the development of single concept or skill laboratory investigations in an inservice summer workshop and their successful use in the classroom. Included are two examples, respectively, relating to operation of a triple beam balance and classification of phases of matter. (CC)

Reports the results of a study designed to determine the nature of research-oriented statements of objectives for the teaching of secondary school chemistry as found in selected professional periodicals of the 1918-1972 period. (Author/JR)

Describes an attempt by chemistry teachers in an inner city high school to improve poor student achievement by concentrating on basic mathematic skills needed for chemistry calculation success. Test results indicated an improvement on questions requiring basic mathematics skills, but diminishing success in items relating to chemistry concepts and…