Describes an indirect laboratory method of calculating pi by using circular aluminum foil pieces as reactants with sodium hydorxide solution in a eudiometer, and indicates the presence of errors ranging from +0.05 percent of 3.1416 to +0.5 percent of 3.142. (CC)

Cognitive objectives (with examples of behavioral objectives) at the first three levels discussed in the previous issue (SE 505 766) are presented. (MM)

A discussion of behavioral objectives of teaching mathematics classified under the heading of application, analysis, and synthesis. This article is a continuation of previous articles in this journal. (DT)

Based on a position paper orginally presented at the Institute on Quantitative Methods in Librarianship at Ohio State University Libraries in August, 1969, this discusses some of the elements of management: motion, time and cost studies, operations research and other mathematical techniques, and data processing equipment. (Author)

The authors discuss the evaluation of mathematics learning at four levels: associative learning, concept learning, principle learning and problem solving. (MM)

Discussed are some applications of Euler's Formula N plus F minus E equals Z, where N, F, and E are respectively the number of vertices, faces, and edges of a planar figure. In particular, the Four-Color Problem is proved for the special case of five countries. (CT)

The author examines a well known number trick, in other number bases, and finds that equivalent results arise. (CT)