This paper, through discussion of a teaching intervention at two secondary schools in Hong Kong, demonstrates the learning advancement brought about by group work and dissects the facilitating role of teachers in collaborative discussions. One-hundred and fifty-two Secondary Two (Grade 8) students were divided into three pedagogical groups, namely "whole-class teaching", "self-directed group work" and "teacher-supported group work"groups, and engaged in peer-review, team debate, group presentation and reflection tasks related to a junior secondary science topic (i.e. current electricity). Pre- and post-tests were performed to evaluate students' scientific conceptions, alongside collected written responses and audio-recorded discussions. The results indicate that students achieved greater cognitive growth when they engaged in cooperative learning activities, the interactive and multi-sided argumentative nature of which is considered to apply particularly well to science education and Vygotsky's zone of proximal development framework. Group work learning is also found to be most effective when teachers play a role in navigating students during the joint construction of conceptual knowledge.
[Copyright of International Journal of Science Education is the property of Routledge]

This study investigated students' interpretation of diagrams representing the human circulatory system. We conducted an interview study with three students aged 14–15 (Year 10) who were studying biology in a Hong Kong school. During the interviews, students were asked to interpret diagrams and relationships between diagrams that represented aspects of the circulatory system. All diagrams used in the interviews had been used by their teacher when teaching the topic. Students' interpretations were expressed by their verbal response and their drawing. Dual coding theory was used to interpret students' responses. There was evidence that one student relied on verbal recall as a strategy in interpreting diagrams. It was found that students might have relied unduly on similarities in spatial features, rather than on deeper meanings represented by conventions, of diagrams when they associated diagrams that represented different aspects of the circulatory system. A pattern of students' understanding of structure–behaviour–function relationship of the biological system was observed. This study suggests the importance of a consistent diagrammatic and verbal representation in communicating scientific ideas. Implications for teaching practice that facilitates learning with diagrams and address students' undue focus on spatial features of diagrams are discussed.
Copyright of International Journal of Science Education is the property of Routledge. Full article may be available at the publisher's website:
http://dx.doi.org/10.1080/09500693.2014.969359

This study uses hierarchical linear modeling to examine the influence of a range of factors on the science performances of Hong Kong students in PISA 2006. Hong Kong has been consistently ranked highly in international science assessments, such as Programme for International Student Assessment and Trends in International Mathematics and Science Study; therefore, an exploration of the factors that affect science performances of Hong Kong students can give a lens to examine how science education can be improved in Hong Kong and other countries. The analyses reveal that student backgrounds as male, at higher grade levels, and born in mainland (when in the same grade) are associated with better science performance. Among the attitudinal factors, enjoyment of science and self-efficacy in science play important roles in scientific achievements. Most of the parental factors, on the other hand, are not having significant impacts on achievement after student attitudes are taken into account, with only parents' value of science having a small effect. School student intake is found to be a strong predictor of school average achievement, as well as a major mediator of the effects of school enrollment size and school socio-economic status. The findings differ from recently reported results, which suggested that school enrollment size was associated with achievement. This study also points out the problems of the use of science instruction time as a school-level variable to explain science achievement in Hong Kong.
[Copyright of International Journal of Science Education is the property of Routledge. Full article may be available at the publisher's website:
http://dx.doi.org/10.1080/09500693.2013.879223]

The science-technology-society agenda has evolved over time to meet emerging educational aims in the light of changes in society and the environment. There is increasing emphasis on students' decision-making on socio-scientific issues (SSIs) not only to highlight the intricate relationships between science, technology, society, and the environment, but also to allow students to incorporate multiple viewpoints into the development of critical reasoning and responsible citizenship. Most research emphases have been on the rationality of reasoning rather than on the internal psychological context that underpins reasoning. This paper explores how these various aspects of reasoning interact in decision-making on SSIs in health contexts through case studies of recent issues in this field. The case studies reveal the negotiation of multiple influences in addressing SSIs in health contexts and the potential interactions between the psychological processes of individuals, science, and sociocultural perspectives. A tentative model to address these interactions emerges from this explorative study and has implications for the use of health-related issues in promoting SSI education.
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http://dx.doi.org/10.1080/09500693.2011.613417]

This study investigated the mental representations of metallic bonding and the malleability of metals held by three male students aged 14-15 (Year 10) who were attending a Hong Kong school. One student was selected by their chemistry teacher as representing each of the highest, the medium, and the lowest level of attainment in chemistry in a school that admitted students of average general attainment. The students were interviewed and their understandings probed through their provision of drawings and their interpretation of the diagrams that had been previously used by their teacher. Dual coding theory was used to interpret the relative significance of visual and verbal input and the interaction between the two for their understanding. There was evidence that students relied on verbal recall in providing their initial understandings and showed an appreciation of the nature of the structural components of the electron-sea model of metallic bonding. However, they varied in terms of their appreciation of the electrostatic force which was responsible for the malleability of metals. The study suggests that a clearer understanding of the electrostatic force involved can be attained when students experience visual and verbal representations simultaneously, a conclusion supported by dual coding theory. Principles for good practice in using diagrams in teaching are discussed.
[Copyright of International Journal of Science Education is the property of Routledge. Full article may be available at the publisher's website:
http://dx.doi.org/10.1080/09500693.2013.867089]

Capitalizing on the comments made by teachers on videos of exemplary science teaching, a video-based survey instrument on the topic of 'Density' was developed and used to investigate the conceptions of good science teaching held by 110 teachers and 4,024 year 7 students in Hong Kong. Six dimensions of good science teaching are identified from the 55-item questionnaire, namely, 'focussing on science learning', 'facilitating students' understanding', 'encouraging students' involvement', 'creating conducive environment', 'encouraging active experimentation' and 'preparing students for exam (PSE)'. Significant gaps between teachers' and students' conceptions on certain dimensions have been revealed. The inconsistency on the dimension 'PSE' is particularly evident and possible reasons for the phenomenon are suggested. This study raises the important questions of how the gap can be addressed, and who is to change in order to close the gaps. Answers to these questions have huge implications for teacher education and teacher professional development.
[Copyright of International Journal of Science Education is the property of Routledge. Full article may be available at the publisher's website:
http://dx.doi.org/10.1080/09500693.2011.629375]

This study utilized data from the 2006 Programme for International Student Assessment Hong Kong sample to investigate the factors that impact the science achievement of 15-year-old students. A multilevel model was used to examine the factors from both student and school perspectives. At the student level, the results indicated that male students, students from high socioeconomic status (SES) families, students with higher motivation and higher self-efficacy, and students whose parents highly value science are more likely to demonstrate achievement in science. At the school level, the results showed school science achievement differences can be explained by school enrolment size, school SES composition, and instruction time per week. Contrary to the negative influence of school size that was reported in previous studies, our findings suggested a positive relationship between school enrolment size and science achievement. This finding leads to an international discussion of school size.
[Copyright of International Journal of Science Education is the property of Routledge. Full article may be available at the publisher's website:
http://dx.doi.org/10.1080/09500693.2012.708063]

Students' attitudes toward chemistry lessons in school are important dependent variables in curriculum evaluation. Although a variety of instruments have been developed by researchers to evaluate student attitudes, they are plagued with problems such as the lack of theoretical rationale and of empirical evidence to support the construct validity of data. This paper describes a study of students' attitudes toward chemistry lessons in Hong Kong secondary schools. One of the scales in the Test of Science-Related Attitudes developed by Fraser was modified to form an Attitude Toward Chemistry Lessons Scale (ATCLS). The construction of the ATCLS was based on a theoretical model with four dimensions: liking for chemistry theory lessons, liking for chemistry laboratory work, evaluative beliefs about school chemistry, and behavioural tendencies to learn chemistry. The arguments for inclusion of these four dimensions are presented. The final version of ATCLS was administered to 954 students. The results of confirmatory factor analysis indicated that there was a good fit between the hypothesised model and the observed data.
[Copyright of International Journal of Science Education is the property of Routledge. Full article may be available at the publisher's website: http://dx.doi.org/10.1080/09500690802189799]

A new instrument was devised to identify misconceptions in biology and probe into the causes of misunderstanding in a relatively quick way. It revealed that novice biology teachers held a number of conceptual errors which were prevalent among secondary school students. They showed serious misunderstandings in cellular metabolism, the nutritional process, gaseous exchange, the circulatory system, homeostasis, reproduction and variation. The problem has been attributed to inadequate mastery of subject knowledge and imprecise use of terminology. Specific teaching strategies were suggested to prevent the propagation of these misconceptions in students. Teacher education programmes should aim at promoting the awareness of teachers as to children's learning difficulties and developing their professional skills in facilitating children's conceptual development.
[Copyright of International Journal of Science Education is the property of Routledge. Full article may be available at the publisher's website: http://dx.doi.org/10.1080/0950069980200406 ]

This article reports a study to elicit junior secondary students' understandings of the nature of science (NOS) through a peer collaboration instruction based on science stories specially developed to present several aspects of NOS. The study also investigated how students reacted to the stories and whether they were able to extract the aspects of NOS presented in the stories. The results show that many students held a serendipitous empiricist view of experimentation and took scientific theories as absolute truth representing reality. Although the science stories impacted on students in substantial ways and the peer collaboration setting helped them develop shared understandings, many students changed from one set of inadequate views of NOS to another rather than to adequate views. This was attributed to students interpreting the stories in idiosyncratic ways other than those intended by the instruction and focusing their attention selectively on certain aspects of the stories that appeared to confirm and reinforce their inadequate views. The implications of the findings are discussed.
[Copyright of International Journal of Science Education is the property of Routledge. Full article may be available at the publisher's website: http://dx.doi.org/10.1080/09500690210126748]