The last two decades of collecting evidence to support the plate tectonic theory is reviewed. Discussion also involves how other terrestrial plants show evidence of once having been hot but with long-term stability and no continuing convection. (Author/SA)

Movement education is a vital addition to the professional training of dance instructors. (LH)

Investigates the change in weight associated with the electrostatic potential energy for a system of two point charges supported side by side against a weak gravitational field. (Author/GA)

In using mobiles as a lesson in a high school sculpture class, two important factors, necessary for a successful project, were discussed. One was motion, the other the level of sophistication desired. Students developed complex concepts while learning to appreciate the construction of a mobile. (Author/RK)

"Ready...and...tiptoe!" Creative movement adds style and structure to classroom learning. (Editor)

Presents a selection of fascinating physics demonstrations that look impossible but that can be done with some knowledge of physics and some practice. Includes four demonstrations that illustrate free fall motion and the center of mass of a system. (DDR)

Presents a five-step lesson to teach young children with disabilities to recognize and decode words by actively involving the children in rhythm and movement. The lesson's objectives are provided as well as step-by-step instructions. The lesson calls for students to engage in guided and individual practice. (CR)

Investigated associations between maternal psychological and fetal neurobehavioral functioning with data provided at 24, 30, and 36 weeks gestation. Found that fetuses of women who were more affectively intense, appraised their lives as more stressful, and reported more pregnancy-specific hassles were more active across gestation. Fetuses of women…

Whether the information children express only in gesture can be understood by adults not trained in gesture coding was studied with 20 teachers and 20 undergraduates who saw vignettes of 12 children explaining solutions to equations. Both teachers and undergraduates frequently understood strategies children had not expressed in speech. (SLD)

Presents a hands-on, investigative lab activity for use in an introductory zoology course. Tests the behavioral hypothesis that substrate texture affects earthworm locomotor ability. Provides background information on earthworm locomotion followed by details of the lab exercise. (NB)

Based on a long-term public school system study, the paper examines the sociopsychological process through which conflicts move around in organizations and are transported from one place to another. The conceptualization draws on "triangulation" from social psychology and family therapy and "splitting," developed in…

Describes an experiment demonstrating Lenz's law by measuring a magnet falling through a copper tube compared to a nonmagnet falling. Presents diagrams and pictures showing the apparatus. (YP)

Describes a situation in which a ball strikes a stationary ball. Reviews theoretical findings of such collisions and two important related factors which are momentum and kinetic energy. Includes diagrams for showing the use of a pendulum apparatus, the collision of different size balls, and chain collisions. (RT)

Ninth- and 10th-grade students (n=310) participated in a study designed to determine the effect of three variables (viewing a demonstration, engaging in student to student discussion, and/or reading a refutational text) on conceptual change in physics. Results revealed that reading the refutational text helped students change their intuitive ideas…

Explores strategies in the situation of a runner trying to evade a tackler on a football field. Enables the student to test intuitive strategies in a familiar situation using simple graphical and numerical methods or direct experimentation. (JRH)