Develops a division algorithm in terms of familiar manipulations of concrete objects and presents it with a series of questions for diagnosis of students' understanding of the algorithm in terms of the concrete model utilized. Also offers general guidelines for using concrete illustrations to explain algorithms and other mathematical principles.…

Investigated developmental and/or sex components of energy attitudes using Kuhn's Energy Opinionnaire. Results indicate that changes in student attitudes through grade levels are consistent with cognitive and affective development literature and that sex differences are more pronounced in older students (with females having a more external world…

Investigated the effects of age and participation in a computer-related staff development program on elementary, junior high, and high school teachers' (N-4l) computer attitudes. Results indicate that anxiety about computers was significantly decreased while confidence/liking were increased and that age was not a significant factor. (DH)

termined that students who completed writing assignments on mathematics problems were better problem solvers than students in control groups, supporting the contention that expository writing is an effective, practical, and innovative tool for problem solving. (Sample problems and writing assignments are included.) (DH)

Discusses: (1) the nature of an attitude toward science; (2) why people have attitudes toward science; and (3) how attitudes toward science can be improved. Also differentiates attitudes from beliefs and behaviors. (DH)

Control group students (receiving descriptive, non-inquiry science) and experimental group students (using Science Curriculum Improvement Study-SCIS "Interaction and Systems" materials) were later combined in grade 4 for instruction with SCIS "Subsystems and Variables" materials. Results show similar difficulties in learning system concepts…

Discusses a strategy for teaching degrees of freedom (in conjunction with sampling theory). The strategy, used successfully with students who have completed no more than beginning secondary school algebra, involves drawing items from a pool of five in a hat while explaining sample means and variances. (DH)

An analysis is given of the crisis and loss of confidence in science and technology education, due in part to maintenance of outdated purposes, programs, and practices. The need to clarify and reformulate goals and purposes and thus restore confidence is discussed. (MNS)

How to help children develop time telling and other aspects of time sense, such as understanding the language of time, duration and sequence, and the cyclical nature of recurring events, is discussed. Activities are included. (MNS)

A model, easily constructed by students, is used to assist in seeking basic Pythagorean identities used to prove more complex ones. (MNS)

The literature on problems of inservice teacher education in general, and science inservice teacher education in particular, is synthesized, problems identified, and suggestions generated from the findings. These may also be generalized to mathematics teachers. (MNS)

A handbook for teachers of calculus and analytic geometry is described. Five categories of materials are included, with illustrative examples and a lesson plan. (MNS)

Illinois principals (N=228) were surveyed to determine the qualities they examine when hiring mathematics and science teachers. Content area knowledge, area of certification, and personality characteristics were of higher priority than sponsoring extracurricular activities, references, and minor areas of certification. (DH)

Explains an application of matrix algebra which involves probability matrices and weather predictions. Using probabilities of sunny or cloudy weather students can determine the effect weather on day one will have on subsequent days. (DH)

A survey of Illinois biology teachers (N=156) indicates that textbooks are major factors in determining the teaching of ecology (relevant in teaching science/society issues and for developing environmental literacy). Data on textbooks used, extent of use, instructional methods, ecological concepts taught, environmental problems discussed, and…