Professional Development for International Teachers: Examining TPACK and Technology Integration Decision Making

This mixed-methods study explored the impacts of a semester-long technology professional development for secondary school international teachers from developing nations around the world. We used (a) a survey approach to examine international teachers' perceived technology integration abilities using the technological pedagogical content knowledge (TPACK) framework and (b) a design task to understand their rationale behind technology integration decisions. As a group (N = 16), international teachers reported increased abilities in all TPACK domains. Qualitative analysis of their rationales revealed that though teachers learned to consider the affordances of technology, technology access issues were pivotal in their choice and use of technology in instruction planning. With education becoming increasingly global, the study has implications for the motivation and design of technology professional development programs for international teachers.     

Pharmacokinetic Models for Active Learning of Differential Equations

Abstract

We present adaptable activities for models of drug movement in the human body – pharmacokinetics – that motivate the learning of ordinary differential equations with an interdisciplinary topic. Specifically, we model aspirin, caffeine, and digoxin. We discuss the pedagogy of guiding students to understand, develop, and analyze models, progressing in complexity to a system of differential equations. We investigate the effects of parameter values that distinguish various health levels, and dosing that may have toxic effects. Our assignments include modeling in a student-centered, active, and increasingly inquiry-oriented setting through which the mathematics and biology inform and reinforce each other. We include supplemental information regarding inquiry methods, student learning outcomes, a student’s commentary about our activities, and support through mathematical communities such as POGIL and SIMIODE.     

Daily Intragroup Contact in Diverse Settings: Implications for Asian Adolescents' Ethnic Identity

This study examined the daily‐level association between contact with same‐ethnic others and ethnic private regard among 132 Asian adolescents (mean age = 14 years) attending four high schools ranging in ethnic composition diversity. The data suggest a positive daily‐level association between contact with same‐ethnic others and ethnic private regard for adolescents, who were highly identified with their ethnic group and who attended predominantly White or ethnically heterogeneous schools. In addition, using time lag analyses, contact with same‐ethnic others yesterday was positively related to ethnic private regard today, but ethnic private regard yesterday was unrelated to contact with same‐ethnic others today, suggesting that adolescents' identity is responsive to their environments. The implications of these findings for the development of ethnic identity are discussed.     

Understanding systems theory: transition from equilibrium to entropy

What we call systems theory is more a metatheory than a monolithic theory. It has provided a set of common signposts for all systems theorists to follow. This paper, written from the perspective of communications scholarship, examines the transition of systems theory from the age of equilibrium to the age of entropy during the middle of the twentieth century, and then to the age of emergence at the end of the century. It distinguishes between the old equilibrium-based systems theory and the entropy-based systems theory, as well as the ‘new’ emergence-centered social systems theory. It asserts the existence of close similarities between the fundamental concepts of systems theory and Asian philosophies, despite the cynical dismissal of these similarities by a Luhmann disciple. It documents how media sociology has applied chaos theory to justify market-driven journalism and claim the emergence of a global public sphere; and it looks at the potential of network analysis, an offshoot of systems theory.     

Financing public education in the southern states

A study of curriculum goals set forth in school-leaving examinations in mathematics and biology from Egypt, Iran, Jordan, Lebanon, Morocco, and Tunisia benchmarked against the French baccalaureat examinations. This investigation uncovers and contrasts the goals of secondary education as they are put forward in the tests that are used in the certification of completion of secondary studies in these countries. The work takes advantage of a metric developed for the Third International Mathematics and Science Study efforts to measure educational goals for school mathematics and science. Tests from the sample of Middle Eastern and North African (MENA) countries are found to emphasize traditional content and the ability to recall and apply routine procedures and algorithms. These goals are contrasted with French school-leaving examinations and the implications of these findings for understanding and assessing curriculum policy in MENA, in a context of educational reform and the challenges of economic competiveness are considered.     

Intraseason changes in the body composition of collegiate female gymnasts

Body composition measures were collected pre‐, mid‐ and post‐season on a team of eight national‐calibre collegiate women gymnasts to examine intraseason changes. Also analysed were interseason changes using pre‐ and post‐season data on five of the eight subjects during the current and previous year, according to a 2 x 2 (years x tests) analysis of variance repeated‐measures design. Skinfold, circumference and diameter measures were collected with percentage body fat, lean body mass and body density determined by regression equations developed specifically for collegiate female gymnasts.

Intraseason body weight decreased significantly from pre‐ to mid‐season (x = 55.0 and 53.6 kg respectively); but the difference between mid‐ and post‐season (53.9 kg) values was not significant (P>0.05). The majority of the 1.4 kg weight loss occurred during intense pre‐season conditioning and not during the actual season. Percentage body fat, on the other hand, decreased significantly from pre‐to mid‐season and mid‐ to post‐season (x = 21.4%, 17.4% and 13.45% respectively; P<0.0005). Body density increased significantly from pre‐ to mid‐season and mid‐ to post‐season (x = 1.0476, 1.0584 and 1.0681 respectively; P<0.0005). Of the circumference and skinfold values used in calculating percentage body fat and body density, only the skinfold values displayed significant decreases throughout the season.

Interseason analyses revealed no significant changes in any of the dependent measures between seasons, despite consistent trends. There were no significant years x tests interactions and all intraseason changes for two seasons (n = 5) were the same as those found in more detailed analysis of a single season (n = 8) except in the case of weight loss, which was marginally significant (P < 0.046) in the single‐season and not in the dual‐season analysis (P>0.05).

Body composition of these gymnasts changed in many ways within competitive seasons. The most pronounced changes observed were decreases in subcutaneous fat and increases in body density. This study reinforces the need for administrators, coaches and athletes to be concerned with percentage body fat and skinfold measures rather than weight alone when determining if a person is ‘fat’.