This sixth unit in the SMSG junior high mathematics series is a student text covering the following topics: permutations and selections; probability; similar triangles and variation; non-metric geometry; volumes and surface areas; the sphere; and unsolved problems in mathematics. (DT)

Brief papers based on replies to a questionnaire are presented. The first deals with organizing resources of a mathematics department, the second presents a conversation among teachers concerning problems of teaching students from a number of primary schools, and the third suggests a schedule for planning school activities. (SD)

In response to criticisms that the School Mathematics Program (SMP) does not adequately prepare students for use of mathematics in science, there is need for some improvement in SMP; better communication among teachers and greater teacher initiative are the real solutions to the problem. (SD)

The effectiveness of four types of advanced organizers for a lesson on motion geometry was analyzed. The types of organizers were: (1) single application, (2) several applications, (3) single concrete model, (4) several concrete models. Results showed that advanced organizers can be effective under some conditions. (SD)

Ancient numeration systems form the basis for these worksheets. (SD)

Some of the points of view and facts expressed by employers at a conference of mathematics educators and businessmen are related. (SD)

Development of the repeating decimal expansion for rational numbers is discussed. Expressions for numbers in other bases are also presented. (SD)

A method of finding large primes is described. High school students can use the test using hand calculators, or by programing a computer. (SD)

The exploration mode of content presentation is discussed. (MP)

The last 13 of 32 exercises of a course designed to give a wide range of skills in deductive, inductive, and indirect methods of proof in geometry are presented. (MP)

Studied was how high school science and mathematics students approach tasks that require correlational reasoning for successful solution. The results show that a significant number of students did not use correlational reasoning. (MP)

In grades 8, 10, and 12, 464 subjects were tested on each of the four basic principles of conditional reasoning with (1) Four Card problem tasks and (2) a paper-and-pencil instrument. It was shown that the two assessment procedures lack concurrent validity. (Author/MN)

A questionnaire survey was used to gauge the opinions of mathematics teachers about some history of mathematics materials recently developed for use in the classroom. Teachers' opinions of the materials were generally favorable, but a sizeable proportion responded that they would not use the material in their own teaching. (Author/MN)

The author calls for teachers to seek changes in the content of school mathematics curriculum which will reflect the growing diversity of mathematical application. Two examples of such application which can be described by simple mathematics and involving easy manipulation are given. (MN)

Answers to a list of twenty geometry-related questions are hidden in a matrix of letters. The answers can be read in eight different directions: vertically, horizontally, on both diagonals, forward, and backward. (MN)