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81.
The purpose of this study was to investigate the effects of representation sequences and spatial ability on students’ scientific understandings about the mechanism of breathing in human beings. 130 seventh graders were assigned to two groups with different sequential combinations of static and dynamic representations: SD group (i.e., viewing static representations and then dynamic ones), and DS group (i.e., viewing dynamic representations and then static ones). Among them, 16 students (8 from each group) with different levels of prior knowledge and spatial ability were interviewed. Data sources included a spatial ability test, pre- and post-tests of scientific understandings (involving factual, conceptual, and spatial knowledge), and semi-structured interviews. The statistical results indicated that the SD sequence helped students gain significantly more factual knowledge. The significant interaction effects further suggested that while the representation sequences had no effect on students with low spatial ability, high spatial ability students in the SD group outperformed than their counterparts in DS group on the items of the conceptual and spatial knowledge. Additionally, the analysis of interviews indicated that the representation sequences could affect the foci of students’ explanations and shape their perceptions about the representations. The results suggested interplays among representation sequences, spatial ability, and students’ understandings, and provided insight into the design and arrangement of multiple representations for science learning. 相似文献
82.
Chia‐Fang Hsu 《Communication quarterly》2013,61(4):370-389
This study investigated whether cross‐cultural differences in communication apprehension (CA) can be explained with regard to cultural orientations, personality traits and component theory. To this end, a total of 618 undergraduates, studying in Taiwan (n = 298) and the United States (n = 320), participated in this study. Participants filled out the Personal Report of Communication Apprehension along with Self‐Construal Scale, the Revised NEO Personality Inventory, Fear of Negative Evaluation, and Self‐Perceived Communication Competence scale. The results indicated that Chinese in Taiwan scored significantly higher in communication apprehension than Americans. The influence of culture on CA was mediated by independence self‐construal, neuroticism, extroversion, fear of negative evaluation, and communication competence. The strongest mediating effect was found for self‐perception of communication competence. The implications of these findings were further discussed. 相似文献
83.
Multi-proxy signature schemes allow the original signer to delegate his/her signing power to n proxy signers such that all proxy signers must corporately generate a valid proxy signature on behalf of the original signer. We first propose a multi-proxy signature scheme based on discrete logarithms and then adapt it to the elliptic curve cryptosystem. With the integration of self-certified public-key systems and the message recovery signature schemes, our proposed schemes have the following advantages: (1) They do not require the signing message to be transmitted, since the verifier can recover it from the signature; (2) The authentication of the public keys, verification of the signature, and recovery of the message can be simultaneously carried out in a single logical step; (3) No certificate is needed for validating the public keys. Further, the elliptic curve variant with short key lengths especially suits the cryptographic applications with limited computing power and storage space, e.g., smart cards. As compared with the previous work that was implemented with the certificate-based public-key systems, the proposed schemes give better performance in terms of communication bandwidth and computation efforts. 相似文献
84.
Ting-Chia Hsu 《Interactive Learning Environments》2018,26(1):91-105
To stimulate classroom interactions, this study employed two different smartphone application modes, providing an additional instant interaction channel in a flipped classroom teaching fundamental computer science concepts. One instant interaction mode provided the students (N?=?36) with anonymous feedback in chronological time sequence, while the other showed their feedback by “like” ranking (N?=?26). The behavioural patterns of undergraduates using these two different modes were compared. The results showed that the like-ranked feedback deepened the interaction between asking and answering questions, reduced the number of irrelevant messages, and increased attention to questionable messages. The students using the like-ranking mode also received more encouragement during the flipped classroom discussion activities. 相似文献
85.
Susan T. Skidmore Hsien-Yuan Hsu Matthew Fuller 《Assessment & Evaluation in Higher Education》2018,43(8):1241-1257
The purpose of the present study was to investigate how faculty members coalesce into distinguishable groups in terms of their perceived cultures of assessment at their respective institutions. To date, although researchers have posited the existence of various cultures of assessment, no study to our knowledge has empirically demonstrated the presence of these unobserved (latent) cultures analytically. Accordingly, a latent profile analysis was conducted using Mplus to identify these unobserved groups based on faculty (n = 1148) members’ responses to 12 items (6-point Likert scale) selected from the 2014 Faculty Survey of Assessment Culture. The resulting 4-class solution, including a previously unidentified group, was confirmed by the Lo-Mendell-Rubin Adjusted Likelihood Ratio Test: Culture of Student Learning (n = 502); Evolving Student Learning Culture (n = 398); Culture of Compliance (n = 168); and Culture of Fear (n = 80). Characteristics of each class are described and the prevalence of each class by type of degree granting institution and primary discipline is provided. 相似文献
86.
Yu-chang Hsu 《British journal of educational technology : journal of the Council for Educational Technology》2006,37(2):233-242
This study investigated graduate students’ gender‐specific preferences for certain website interface design features, intending to generate useful information for instructors in choosing and for website designers in creating educational websites. The features investigated in this study included colour value, major navigation buttons placement, and navigation mode. In this study, 56 graduate students in a north‐eastern research university in the US volunteered to evaluate 30 pairs of web page screenshots or website prototypes, and to indicate on the questionnaires their preferences within each pair of prototype. Each participant's preferences for the three features were coded and categorised for chi‐square tests of independence to determine the relationships between gender and the investigated design features. The findings of gender effects on graduate students’ preferences for the aforementioned features were presented and discussed. 相似文献
87.
The alignment of professional development and teacher evaluation has been a growing concern in teacher professional development practices. The issue of how teacher evaluation can help authentic professional development is important in that teachers only learn what is real, useful and valuable to them. Based on our reflections on current professional development in Taiwan, this article challenges the dominant evaluation-led approach to professional development, in which much attention and energy of policy-makers and educators is devoted to establishing extensive programmes and standards that might not be relevant to teachers’ concerns. We draw upon Habermas’ notion of system and lifeworld to sense-make and to theorise why it can be difficult for teachers to engage the entirety of their personhood with a policy agenda of pursuing system integration and efficiency whereby teachers’ learning actions become strategic. We argue for considering teacher development from an alternative, lifeworld perspective in which teachers and teachers’ subjectivities in striving to achieve what matters and makes sense to them are placed centre stage. Although the evaluation mechanism plays a role in avoiding the devolution of professional development into mere subjectivism, it is reductive to treat teacher professional development not only as distinct but also as requiring evaluation items and overlooking the importance of maintaining teacher development as a tacit, authentic process of knowing. We finally juxtapose the two approaches and their contrasting characteristics and describe implications for planning teacher professional development so that policy-makers and educators can reflect on their mindsets and implementation and modify their programme planning and strategies accordingly. 相似文献
88.
Fostering High School Students’ Conceptual Understandings About Seasons: The Design of a Technology-enhanced Learning Environment 总被引:1,自引:0,他引:1
The purpose of this study is to understand in what ways a technology-enhanced learning (TEL) environment supports learning
about the causes of the seasons. The environment was designed to engage students in five cognitive phases: Contextualisation,
Sense making, Exploration, Modeling, and Application. Seventy-five high school students participated in this study and multiple
sources of data were collected to investigate students’ conceptual understandings and the interactions between the design
of the environment and students’ alternative conceptions. The findings show that the number of alternative conceptions held
by students were reduced except for the incorrect concepts of “the length of sunshine” and “the distance between the sun and
the earth.” The percentage of partial explanations held by students was also reduced from 60.5 to 55.3% and the percentage
of students holding complete scientific explanations after using Lesson Seasons rose from 2.6 to 15.8%. While some students
succeeded in modeling their science concepts closely to the expert’s concepts, some failed to do so after the invention. The
unsuccessful students could not remediate their alternative conceptions without explicit guidance and scaffolding. Future
research can then be focused on understanding how to provide proper scaffoldings for removing some alternative concepts which
are highly resistant to change.
相似文献
Fu-Kwun HwangEmail: |
89.
The purpose of this study was to examine the impacts of embedding collaboration into a game with a self-explanation design for supporting the acquisition of light and shadow concepts. The participants were 184 fourth graders who were randomly assigned to three conditions: a solitary mode of the game with self-explanation, a collaborative mode with self-explanation, or the control condition of a single-user game without integrating self-explanation. Students' conceptual understanding was measured through an immediate posttest and a retention test with a three-week delay. Further, students' engagement in answering the prompts was also investigated. The findings showed that having students collaboratively play science-based games with a self-explanation design embedded was not sufficient to help them learn the science concepts. Rather, it was the level of engagement in responding to the self-explanation prompts that mattered. 相似文献
90.
Fang-Ying Yang Shiang-Yao Liu Chung-Yuan Hsu Guo-Li Chiou Hsin-Kai Wu Ying-Tien Wu Sufen Chen Jyh-Chong Liang Meng-Jung Tsai Silvia W.-Y. Lee Min-Hsien Lee Che-Li Lin Regina Juchun Chu Chin-Chung Tsai 《Research in Science Education》2018,48(2):325-344
The purpose of this study was to develop and validate an online contextualized test for assessing students’ understanding of epistemic knowledge of science. In addition, how students’ understanding of epistemic knowledge of science interacts with learner factors, including time spent on science learning, interest, self-efficacy, and gender, was also explored. The participants were 489 senior high school students (244 males and 245 females) from eight different schools in Taiwan. Based on the result of an extensive literature review, we first identified six factors of epistemic knowledge of science, such as status of scientific knowledge, the nature of scientific enterprise, measurement in science, and so on. An online test was then created for assessing students’ understanding of the epistemic knowledge of science. Also, a learner-factor survey was developed by adopting previous PISA survey items to measure the abovementioned learner factors. The results of this study show that; (1) by factor analysis, the six factors of epistemic knowledge of science could be grouped into two dimensions which reflect the nature of scientific knowledge and knowing in science, respectively; (2) there was a gender difference in the participants’ understanding of the epistemic knowledge of science; and (3) students’ interest in science learning and the time spent on science learning were positively correlated to their understanding of the epistemic knowledge of science. 相似文献