Enigmas in School Science: students’ conceptions for scientifically associated words

Master's students were involved in the design, and later the administration, of a questionnaire for 500 junior secondary students in Botswana and Lesotho, to buildup a picture of student perceptions of science and technology. Responses to mainly open‐ended questions were categorised according to key phrases mentioned by the students. There was some confusion over the differences between science and technology, but they were overwhelmingly perceived as subjects appropriate to both sexes. Science and technology were seen in broad socio‐economic terms, enabling people to cope in the modern world, gain employment in both the formal and informal sectors, and contribute towards national development. Although science and technology were judged to have enhanced the quality of life, they had introduced conflicts into traditional beliefs and cultures, in part as a result of increasing female emancipation. The attitudes of the students towards the two subjects, and to the impact they have had on everyday life, were congruent with the philosophical aims of the science and technology syllabuses of both countries and with global initiatives such as Project 2000 +.     

Goldilocks Meets Gertrude Stein: Poetry Explication for the Verse-Averse

Literature students often fear poetry explication, supposing it is beyond their intellectual reach. As with many preconceptions that surface in the classroom, this is an impression I find helpful to tackle forthrightly. Years of teaching literature have convinced me that even English majors can become timid in the face of assignments calling for poetry explication. Given this common response, I have experimented with many methods for acclimating students to poetry as a form. The activity described here has proven helpful in this regard.     

Children’s images of beauty: environmental influences on aesthetic preferences

This article reports on a recent study that explored children’s aesthetic preferences. Authors of previous studies in this area have concluded children have a relatively narrow range of preferences based on judgments about their responses to images. In other contexts, researchers have investigated children’s perspectives on their environments and created opportunities for them to take photographs in response to research tasks. This study is the first to draw on both approaches in order to develop a clearer understanding of children’s aesthetic preferences. Fifty-one children in two primary schools were asked to find and photograph images to represent their perceptions of beauty. In order to investigate whether or how children’s environments influenced their preferences, the schools were located in contrasting urban and rural areas. The article explores several contrasts between the two sets of images and offers explanations for these contrasts. It suggests that previous studies may have underestimated the diversity of children’s aesthetic preferences and that social, cultural and environmental factors may explain the differences between children’s aesthetic preferences. The article concludes that both researchers and teachers could adopt similar methods to develop our understanding of children’s perspectives, identities and experiences.     

Assessing an Online Student Orientation: Impacts on Retention,Satisfaction, and Student Learning

To help prepare students for the rigors of an online master’s degree in technical and professional communication, I created a course-embedded online student orientation (OSO) structured by the community of inquiry theory of online learning. The study researched the effect of the OSO on student satisfaction, student perceptions of online learning, and students’ program retention. The OSO was effective in helping students to reflect on their learning and demonstrated students’ interest in peer collaboration.     

Comparison of kinematics in skilled and unskilled arms of the same recreational baseball players

Abstract

We examined mechanisms of coordination that enable skilled recreational baseball players to make fast overarm throws with their skilled arm and which are absent or rudimentary in their unskilled arm. Arm segment angular kinematics in three dimensions at 1000 Hz were recorded with the search-coil technique from the arms of eight individuals who on one occasion threw with their skilled right arm and on another with their unskilled left arm. Compared with their unskilled arm, the skilled arm had: a larger angular deceleration of the upper arm in space in the forward horizontal direction; a larger shoulder internal rotation velocity at ball release (unskilled arms had a negative velocity); a period of elbow extension deceleration before ball release; and an increase in wrist velocity with an increase in ball speed. It is suggested that some of these differences in arm kinematics occur because of differences between the skilled and unskilled arms in their ability to control interaction torques (the passive torque at one joint due to motion at adjacent joints). It is proposed that one reason unskilled individuals cannot throw fast is that, unlike their skilled counterparts, they have not developed the coordination mechanisms to effectively exploit interaction torques.     

Testing Alternative Hypotheses Regarding the Association Between Behavioral Inhibition and Language Development in Toddlerhood

Studies have reported an inverse association between language development and behavioral inhibition or shyness across childhood, but the direction of this association remains unclear. This study tested alternative hypotheses regarding this association in a large sample of toddlers. Data on behavioral inhibition and expressive and receptive language abilities were collected from 816 twins at ages 14, 20, and 24 months. Growth and regression models were fit to the data to assess the longitudinal associations between behavioral inhibition and language development from 14 to 24 months. Overall, there were significant associations between behavioral inhibition and expressive language, and minimal associations with receptive language, indicating that the association is better explained by reticence to respond rather than deficient language development.