How day of posting affects level of critical discourse in asynchronous discussions and computer-supported collaborative argumentation

In asynchronous threaded discussions, messages posted near the end of the week provide less time for students to critically examine and respond to ideas presented in the messages than messages posted early in the week. This study examined how the day in which messages are posted (early, midweek and weekend) in computer-supported collaborative argumentation affect the number of responses elicited by arguments and challenges, and how its effects differ across the four types of exchanges (argument–challenge, challenge–counterchallenge, challenge–explain, challenge–evidence) that serve as indicators of critical discourse. This study found that the day of posting had a significant effect on the number of responses elicited per message, with the greatest to smallest effect on argument–challenge, challenge–counterchallenge, challenge–explain and challenge–evidence exchanges respectively. These findings highlight some of the limitations of asynchronous discussions, and suggest alternative ways to implement and design discussion environments to promote higher levels of critical discourse.     

What shapes the self-esteem of elderly Filipinos working beyond the retirement age? A structural equation model (SEM)

Previous studies have indicated that major transitions in life such as retirement or exit from working life may contribute to the normative decline in self-esteem. A growing trend on elderly’s labor force beyond retirement invites the conduct of more empirical studies on the dynamics of self-esteem among the elderly group. Anchored on the Self-Determination Theory, this study is an attempt to test a model that examines the impact of social support, health promotion, activities of daily living and anxiety on the self-esteem of a select group of Filipino elderly working beyond the retirement age. Two-hundred eighteen (218) working elderly from the capital of the Philippines participated in this exploratory study. Data gathered from a multi-aspect questionnaire were analyzed using SPSS version 19 and AMOS version 19. Results of structural equation model (SEM) indicated that social support; activities of daily living and health promotion have direct effects on self-esteem, thus supporting the hypotheses. A direct relationship exists between elderly activities of daily living and their social support and anxiety. Notably, an inverse relationship exists between elderly anxiety and factors such as health promotion and self-esteem. The emerged model in this study could serve as valuable tool for nurses in enhancing nursing care aimed at promoting the psychological-well-being and occupational health among the elderly.     

Science Without Literacy: A ship without a sail?

This article argues that reading, writing and argument are central to any conception of science as it is currently constituted. Moreover, it is through the texts of science, popular accounts or journalistic reported versions that the majority of the public interact with and consider the implications of the findings that science presents. However, the study of the language of science, science's epistemic base and the cultural norms and values that underpin its practice are currently considered only marginal to the teaching of science. Rather, the specialised laboratories provided for science teachers and the narrow conception of science embodied in the curriculum gives pre-eminence to science as an empirical activity in the naive belief that this is central to understanding the nature of science. The consequent failure to recognise the centrality of language, literacy and argument to science education leaves the majority ill equipped to become critical consumers of science. Change requires a concerted attempt to reconceptualise the priorities for science education through a mix of new curricula, new strategies and last, but not least, new modes of assessment.     

Conflicts in Developing an Elementary STEM Magnet School

Elementary schools in the United States have been the terrain of a highly politicized push for improved reading and mathematics attainment, as well as calls for increased importance to be given to science, technology, engineering, and mathematics (STEM). With priorities placed on basic skills, however, instructional time in subjects such as science in the elementary years has been greatly diminished. We recount in this article the efforts of a school district to create an elementary STEM school through the designation of a magnet school and elaborate on the inherent tensions and conflicts in such an effort.