Investigates the possibility of repeated tests to demonstrate competency. Three competency tasks were administered to 89 college students. Students failing to demonstrate competency on one or more tasks on an initial test were retested only on those tasks. All students later were given a delayed retest. (HM)

A survey revealed the following: (1) courses in computer science, business, economics, accounting, finance, and communication skills will enhance a mathematics major's employment possibilities; (2) more mathematics majors will be hired in the near future; and (3) college co-op programs are recommended. (MP)

Discusses Piaget's ideas and their influence on science class practices. Three elementary science programs are presented as teaching models based on Piaget's theory. New issues for teachers created as a result of the application of Piagetian ideas are discussed also. (HM)

Presented is a historical treatment of computational devices that use counters on a checkerboard. The discussion includes works of John Napier, Walter Minto, and Nicholas Saunderson. (MP)

Describes the Alternative Strategies and Services for Improving Science Teaching program of Iowa (Iowa-ASSIST). It represents a major effort for inservice education and science curriculum implementation in Iowa schools. The functioning model and the outcomes of the program are also discussed. (HM)

A formula for predicting population, given past data, is presented. Decade census reports for the United States are used to analyze problems that might occur in prediction. (MP)

Investigates the relationship between students' previous school knowledge about a particular natural phenomenon and the teaching of a science lesson about that phenomenon. A group of 198 secondary school students from Sierra Leone, West Africa, and 21 junior high students from the United States participated. (HM)

A step-by-step procedure for converting a secondhand platform balance to the metric system is outlined for use as a student project. (MP)

Presents the conceptual levels theory of Hunt and his associates. Indicates how it can be used as a means to develop a theoretical framework from which the validity of unified science curricula can be examined. (HM)

Comparing calendar years and planetary years serves as the basis of a calculator problem. (MP)

Attempts to assess the impact of the NSF science curriculum projects have been generally unsatisfactory. Much of the NSF impact on science education will probably continue to defy quantification. Whether or not the new curricula achieve their goal of increasing scientific literacy among the public can only be evaluated over the lifetimes of the…

Pick's Theorem, a statement of the relationship between the area of a polygonal region on a lattice and its interior and boundary lattice points, is familiar to those whose students have participated in activities and discovery lessons using the geoboard. The proof presented, although rather long, is well within the grasp of the average geometry…

This article suggests the use of the circuit box to illustrate the processes involved in the scientific method. Construction and wiring diagrams and a materials list are presented. (BB)

Numerous mathematical examples are presented which illustrate and raise questions about students' tendencies to overgeneralize. (BB)

Investigative Science for Elementary Education-Instructional Television (ISEE-ITV) is a resource developed by Pennsylvania's Department of Education for elementary teachers with in-service preparation in science. The teachers use instructional television to model six teaching strategies. (BB)