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)

Describes the Science Activity Teaching model, which incorporates five teacher managerial behaviors into a model with these subcomponents: focus activity, student instructions, student group activity, synthesizing, and evaluation. This plan provides for the development of fate control, language formation, and social skills. (CS)

A simple teaching model, designed to show rapidly which are the principal factors in population growth and how they are related, is presented. The apparatus described allows students to play several different active roles. (MP)

Presents a practical model for planning and implementing a field trip as an integral part of the science curriculum. Reviews the literature related to the role of field trips in the learning process; describes the model; and provides an example implementing the learning cycle method. (Contains 17 references.) (MDH)

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

This model is useful in identifying specific learning problems and in providing techniques for the teacher to motivate and teach students at all levels. What it is and how it can be used are discussed, illustrated by specific strategies for geometry and science. (MNS)

Discusses the nature, role, and limitations of analogies in science teaching, suggesting that they be discussed in the classroom to: (1) increase awareness of their limitations; (2) prevent misconceptions from occurring; and (3) encourage critical thinking. (JN)

Models for division are discussed: counting, repeated subtraction, inverse of multiplication, sets, number line, balance beam, arrays, and cross product of sets. Expressing the remainder using various models is then presented, followed by comments on why all the models should be taught. (MNS)

This article examines the Pythagorean Theorem from a geometric point of view by suggesting some natural extensions of the theorem. The use of a more general theorem to prove a difficult one is suggested, where possible. The article includes figures and proofs. (Author/MA)

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.…

The article discusses observing and quantifying as basic skills, presents a model for dealing with problems, and suggests seven activities which range from kindergarten to twelfth-grade level. (MK)

Activities in which students make and prove conjectures and devise their own geometric axiom systems are discussed. (SD)

This article provides a manipulative demonstration of the relationship between the squares on the sides of a right triangle. Materials are listed and directions are given for the student. Illustrations are included. (Author/MA)

Two models are presented. The first assumes that air resistance is proportional to the velocity of the falling body. The second assumes that air resistance is proportional to the square of the velocity. A program written in BASIC that simulates the second model is presented. (MP)

The use of a variety of models to develop number concepts is advocated. Four models are discussed, with illustrations: the cardinal number of a set, Cuisenaire rods, the number line, and the Papy Minicomputer. (MNS)