Reports on a small-scale investigation of student understanding of moments of forces to provide some indication as to the nature of intuitive ideas in this area. Results of the investigation suggest three stumbling blocks in the conceptual understanding of moment of forces. (Author/ASK)

Shows that the conventional wisdom about the extreme inaccuracy of stopwatch measurements during the acceleration and free fall of objects is mistaken. (ZWH)

One dilemma of constructivist modes of instruction, which involve engaging students in discussions concerning a range of possible explanations for a given phenomenon, is that such an approach may confuse students who believe that absolute scientific truth exists. Historical dialogues in which various perspectives are aired by key scientists of the…

Investigated was the nature of teachers' ideas about force and gravity, changes in materials, and energy. Information was obtained by using interview-about-events and interview-about-instances techniques. Examples of teachers' conceptions and ways of thinking are included. (YP)

Fifteen true-false statements are provided that are to be used to spur discussion and arguments about the concept of motion. Each statement is carefully worded to sound plausible, but each one attacks some misunderstanding common to students who are encountering Newton's mechanics for the first time. (KR)

A mechanical analogy between the microscopic motion of a charged carrier in an ordinary resistor and the macroscopic motion of a ball falling along a slanted board covered with a lattice of nails is introduced. The Drude model is also introduced to include the case of inelastic collisions. Computer simulation of the motion is described. (KR)

Discussed is the importance of using scale drawings in teaching physics. Concepts including the orbit of the Space Shuttle, the smoothness of the earth's surface, the oblateness of the earth, the eccentricity of the earth's orbit, and the solar system are illustrated. (CW)

Reports various misconceptions of Newton's third law obtained from interviews and written tests of high school students. Suggests putting emphasis on the third law in physics teaching. Ten references are listed. (YP)

This article presents an approach to teaching "motion and inertia." The teaching strategy consists of four phases: (1) orientation; (2) eliciting children's ideas; (3) restructuring of ideas; and (4) improving and applying. Samples of students' ideas on the concept of mechanics are provided. Lists 11 references. (YP)

Discusses a misconception about the cycloid that asserts the final point on the path of shortest time in the "Brachistochrone" problem is at the lowest point on the cycloid. Uses a BASIC program for Newton's method to determine the correct least-time cycloid. (MDH)

By studying many observations from recent research dealing with beginning physics students' conceptions about forces and motion, this investigation produced a framework within which this research can be organized. The framework summarizes the mechanisms of force invoked by students in particular situations, and it describes the features of…

Illustrated is the confusion over centrifugal force in sample problems, diagrams, formulas, and examples. Some recommendations to remedy the situation are suggested. (YP)

A questionnaire and demonstrations were used to identify students' conceptions about the composition of orthogonal velocities. Four questions from the questionnaire are provided and the results for each question are reported. The four implicit vector characteristics of this study are appended. (YP)

This paper analyzes the misconceptions high school students have about force and suggests that the misunderstanding of Newton's third law is the key to these misconceptions. Clinical interview and diagnostic test data (N=104) indicates that many students have a naive view of force as an acquired or innate property of single objects rather than…

Discusses the teaching of vectors and the inadequate and inappropriate examples given in many textbooks. Suggests using the motion of a sailboat or the motion of a car moving on the Earth's surface as possible examples. Details a proper vector teaching example. (MVL)