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11.
According to the national survey of science education, science educators in the USA currently face many challenges such as lack of qualified secondary Earth and Space Science (ESS) teachers. Less qualified teachers may have difficulty teaching ESS because of a lack of conceptual understanding, which leads to diminished confidence in content knowledge. More importantly, teachers’ limited conceptual understanding of the core ideas automatically leads to a lack of pedagogical content knowledge. This mixed methods study aims to explore the ways in which current secondary schooling, especially the small numbers of highly qualified ESS teachers in the USA, might influence students’ learning of the discipline. To gain a better understanding of the current conditions of ESS education in secondary schools, in the first phase, we qualitatively examined a sample middle and high school ESS textbook to explore how the big ideas of ESS, particularly geological time, are represented. In the second phase, we quantitatively analyzed the participating college students’ conceptual understanding of geological time by comparing those who had said they had had secondary school ESS learning experience with those who did not. Additionally, college students’ perceptions on learning and teaching ESS are discussed. Findings from both the qualitative and quantitative phases indicate participating students’ ESS learning experience in their secondary schools seemed to have limited or little influence on their conceptual understandings of the discipline. We believe that these results reflect the current ESS education status, connected with the declining numbers of highly qualified ESS teachers in secondary schools. 相似文献
12.
Yeol Huh 《Performance Improvement》2015,54(7):35-36
When I was completing my coursework for both my MS and PhD programs in instructional systems technology, I was exposed to a number of theories, models, principles, and frameworks for the fields of instructional and performance technologies. Theories have provided me with a solid understanding of the relationships among various constructs and also provided me with explanations of certain phenomena, whereas models, principles, and frameworks have provided me with concrete ideas as to how to apply theoretical knowledge to actual instructional design and development (IDD) and human performance technology (HPT) projects. 相似文献
13.
The Definition, Assessment, and Mitigation of State Boredom Within Educational Settings: A Comprehensive Review 总被引：1，自引：0，他引：1
Jennifer J. Vogel-Walcutt Logan Fiorella Teresa Carper Sae Schatz 《Educational Psychology Review》2012,24(1):89-111
Mitigating the situational factors that give rise to state boredom is a consistent challenge facing educators. Despite the
growing amount of literature devoted to the construct, the field has yet to arrive at a consensus regarding a clear theoretical
or operational definition. Subsequently, inconsistencies exist in the assessment methodologies, research findings lack generalizability,
and strategies for mitigation in educational settings remain elusive. In this cross-disciplinary analysis, the extant literature
on state boredom is critically reviewed and synthesized, and a two-dimensional definition of state boredom as an unpleasant
(subjective), low-arousal (objective) experience is proposed. Findings from the technological advances of the last decade
that allow for the objective measurement of physiological states are used to inform recommendations for empirically sound
assessment methodologies. Finally, the proposed definition of state boredom and related assessment strategies are discussed
with respect to implications for enhancing educational practices. 相似文献
14.
Dabae Lee Yeol Huh Chun-Yi Lin Charles M. Reigeluth 《Educational technology research and development : ETR & D》2018,66(5):1269-1302
Personalized Learning (PL) has been widely promoted. Despite the increasing interest in PL, it is difficult to be implemented, because it can be complicated, costly, and even impossible without the help of powerful and advanced technology. This national survey study aimed at systematically investigating technology usage and needs of teachers in learner-centered schools in the U.S based on the conceptual framework of the Personalized Integrated Education System (PIES). PIES specifies four major functions: recordkeeping, planning, instruction, and assessment. A total of 308 learner-centered schools were identified that met at least three of the five criteria of PL: (1) personalized learning plans, (2) competency-based student progress, (3) criterion-referenced assessment, (4) problem- or project-based learning, and (5) multi-year mentoring. Survey responses of 245 teachers from 41 schools were analyzed. Results indicate that only 12% of teachers responded that they had a technology system that integrated the four major functions. Among the rest, 21% reported that they had no such systems. Technology was most widely used for planning and instruction but not for recordkeeping and assessment. 相似文献
15.
Cho JY Hwang DY Kang TS Shin DH Hwang JH Lim CH Lee SH Lim HJ Min SH Seo SJ Song YS Nam KT Lee KS Cho JS Kim YK 《Journal of sports sciences》2003,21(11):943-951
In its late stage, Alzheimer's disease results in progressive muscle weakness in the arms and legs. The aim of this study was to determine whether mice expressing the skeletal muscle-specific mutant PS2 gene (a model of Alzheimer's disease) are a useful experimental system to study the protective effect of exercise on A beta-42 reduction, improvement of behavioural function and changes in metabolic parameters. With this aim in mind, the transgenic mice were subjected to treadmill exercise for 3 months. The results showed that in transgenic mice, but not in normal mice, treadmill exercise resulted in a reduction of A beta-42 deposits and an improvement in behavioural function, thereby restoring normal concentrations of total cholesterol, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol and triglyceride. Thus, exercise may represent a practical therapeutic strategy for use with human patients with Alzheimer's disease. 相似文献