Presents Rugg's educational philosophy and his materials in a descriptive overview; discusses his designs for a new social studies field; examines the process of curriculum development practiced by Rugg and his team of educators and authors; and draws parallels between the Rugg product and the projects of the 1960's. (Author/JK)

This review of simulation game research and evaluation efforts identifies ten game design variables which are likely to facilitate or impede the development of decision-making skills. (Author)

The authors discuss the procedure, findings, and summary of a study conducted through the use of anonymous questionnaires in an attempt to determine what actual classroom practice is in second- and fifth-grade mathematics classes. (MN)

A survey is discussed in which philosophies of mathematics and its teaching were studied. Significant differences occurred between secondary school principals and university or college mathematics teacher educators and between secondary school mathematics teachers and university or college mathematics teacher educators. (MN)

A study is reported which involved elementary school teachers being exposed to a new teaching approach, practicing the approach by way of in-service opportunities, and then studying the effects on their own class. (MN)

The results of this field experiment support the conjecture that when learning tasks involve the development of a mathematical structure, guided-discovery techniques involving dialectical dialogue may be a more viable alternative to conventional instruction than individualized instruction through expository or programmed packages. (MN)

The authors present a field study aimed at determining whether or not statistically significant relationships exist between students' perceptions of selected behaviors of pre-algebra teachers and selected student performance and attitude variables. (MN)

The authors attempt to determine the effects of the use of direct and "combinations of tens" methods of two column-addition, ability, and grade level as factors in column addition efficiency. (MN)

The reported study is an attempt to investigate possible interaction between criterion measures of learning and retention of material and figural-inductive and symbolic-deductive methods of presentation. (MN)

A tribute to William A. Brownell is given along with a brief sketch of his academic career and professional activities and selected references illustrating his philosophy of education and research. (MN)

A description of the use of power analysis in controlling the probability of a Type II error, and hence in the construction of a suitable research design, is given. (MN)

No significant interaction was found between two instructional treatments and two aptitude variables in this study, but they did find four disordinal interactions, two using one predictor variable and two using two predictor variables. (MN)

Evidence is presented for the theory that the two brain hemispheres process stimuli differently: the left hemisphere is specialized for logico-analytic tasks and the right hemisphere for visuo-spatial tasks. They contend that cognitive ability is related to the development of hemispheric asymmetry and present implications for mathematics education…

This study compares three methods of introducing two-digit numeration. It is concluded that teachers should build on the preschool exposure children have in counting past ten, rather than have children begin by counting out groups of tens and ones and only later in the process use the normal number names. (MN)

Two studies examine preschool children's knowledge of the effects of the physical processes of addition and subtraction on the relative amounts of two sets. Results indicate that most preschool children discover the nature of addition and subtraction outside of their formal education and rather than having to teach these ideas, teachers can use…