Describes a systematic investigation of the understanding of velocity by students in introductory physics courses. Data were obtained using the individual demonstration interview, similar to the clinical interview. Results are reported for success of different populations in comparing velocities for two simultaneous motions. Implications for…

Presents an experiment to show the energy conservation principle using a bow. Describes how to measure the force and work of the bow and the initial velocity of an arrow. (YP)

Notes that the rigorous kinetic theory, based on the Boltzmann equation, does not yield exact results although some texts claim this to be so. Stresses that they should be presented as approximations with an indication that refinements in the values are possible. (MVL)

Describes making a cardboard frog. Discusses the physics of various motions of the frog. Provides diagrams showing how to make the frog, the motions, and the mechanics formulas. (YP)

Presents a case study of how one 11th-grader learned the meaning of the velocity sign. Her learning was not just an acknowledgment of a rule but also a broad questioning and revision of her thinking about graphs and motion. (16 references) (Author/MKR)

This article describes the use of modern science fiction movies as a vehicle to teach scientific principles. The resulting artificial gravity from a spinning space station in movie "2001" is calculated from measurements taken off of the screen. A mathematical explanation is provided. (MVL)

Describes the use of the Texas Instruments' calculator-based laboratory (CBL) and Vernier accelerometer for measuring the vector sum of the gravitational field and the acceleration of amusement park rides. (JRH)

Presents an alternative to the use of a radar to determine how fast an individual can serve a tennis ball. Equipped with a tape recorder and a Macintosh computer, students determine the velocity of a tennis ball by analyzing the sounds and echoes heard on the court. (ZWH)

Examines inconsistencies in science textbook discussions of vector quantities and force. Provides illustrations of textbook inconsistencies related to Newton's laws of motion and the concepts of centrifugal and coriolis force. (MDH)

Recommends including geography in history instruction. Suggests that the theme of time is implicit in the five fundamental geographical themes of location, place, relationships within places, movement, and regions. Observes that maps enable students to visualize historic events. Concludes that geography can help students connect past and present.…

Video and print formats of cardiovascular motion studies were compared for use as assessment measures of interpretive skills for 392 doctors taking a cardiovascular disease certification test. Although video studies were easier to interpret, the equivalence of both motion studies supports use of the print format in national examinations. (SLD)

Presents a first day physics activity having students determine the fine for a speeding ticket if the speeds considered include the earth's rotation and revolution speed, and the movement through the galaxy. (MDH)

Discusses ways in which marine biology can be integrated into the physics classroom. Topics suggested for incorporation include the harmonic motion of ocean waves, ocean currents, the interaction of visible light with ocean water, pressure, light absorption, and sound transfer in water. (MDH)

Presents examples of evaluation studies of visitor interactions with science museum exhibits. Example one involves application of existing findings about naive notions of motion to task of engineering a novel encounter with parabolic trajectories. Example two is a student project evaluating a prototype exhibit on light pipes and concludes that…

Discusses the importance of movement to mental and physical development, especially in young children's learning environments. Suggests that children naturally need to move in order to learn, and adults' efforts to entice children to sit still, pay attention, and be quiet often run contrary to this need. Proposes creating safe learning…