International studies of science education, such as the Trends in Mathematics and Science Study (TIMSS), have revealed considerable national disparities in students' achievements in science education. The results have prompted many nations to compare their science education systems and practices to those of others, to gain insights for improvement. Teacher training and professional development are key educational components that have not attracted as much attention as they deserve in international comparative studies. This study compares the conceptions and attitudes of pre-service elementary teachers (PSETs) in Hong Kong and the United States with respect to inquiry science learning and teaching at the beginning of the semester before the start of the science methods course. PSETs' conceptions and attitudes in the two countries were compared by means of a questionnaire with both Likert-type and open-ended questions. Quantitative data were analyzed using exploratory factor analysis and inferential statistics, while qualitative data were analyzed through the systematic categorization of PSETs' responses into broad themes and subthemes to reflect patterns in their conceptions of and attitudes toward inquiry science learning and teaching. The results revealed a complex interplay between PSETs' conceptions of and attitudes toward inquiry science learning and teaching. The results shed light on the effects of sociocultural contexts and have important implications for the design of science methods courses.
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Teachers from three secondary schools together with the authors initiated a project to develop teaching strategies and resources to implement a new Hong Kong Junior Secondary Science Curriculum (JSSC) introduced in 2000. The teachers met regularly to share their experiences of the teaching designs and classroom practice. Through working together, teachers became mentors and learners of the other teachers. Data were collected from records of teacher meetings, lesson observations, teacher interviews and student interviews to evaluate the effectiveness of the project. Findings of this study revealed that teaching approaches of these teachers changed significantly, particularly towards more student-centred modes of learning. Active student participation encouraged the teachers to explore and try out innovative ways of learning and teaching of science. The positive feedbacks from students stimulated the teachers to reflect their role as facilitators and curriculum decision-makers rather than passive transmitters of the curriculum. To be successful in making changes in the teaching culture, findings indicated that the teachers shared the common goal of delivering quality science education. The change had also to be taken place in a context in which high quality teaching resources developed by the teachers had an impact on pupils' learning. The change was not only on the pedagogical content knowledge applied in classes. It was also a change in the belief in science education. However without the characteristics of a competent teacher such as good science background and good presentation skills, such changes would not be able to succeed.

General Studies (GS), implemented in Hong Kong primary schools in 1994, integrates the three subjects of Science, Health Education and Social Studies. The integration of primary subjects makes a sharp contrast with the situation in the past when teachers were teaching separate subjects. As a result, many teachers previously without science background may have been drafted in to teach the domain of science and technology of GS. The most severe obstacle to the improvement of science in primary schools in the UK found by inspectors is that "many existing teachers lack a working knowledge of elementary science appropriate to the children of his age" (cited in Harlen et al., 1995, p.4). There have been a number of researches studying the teaching of science and technology in primary schools but very few are conducted in Hong Kong where GS is implemented without precedent. Further to the paper entitled 'Primary teachers' confidence in teaching science and technology' on the quantitative findings presented at the International Conference on Teacher Education 1999, this paper reports the result of the qualitative part of a research project on primary teachers' self-perceived confidence in teaching different subjects and in teaching the area of 'science and technology' of the GS curriculum. Five teachers were invited for interviews to probe their background and the confidence in teaching the areas of science and technology of the GS curriculum. The study has identified the factors affecting teachers' confidence in primary science and technology in Hong Kong and identified the effects due to low confidence on teachers' practice. In addition, teachers' pinions about the existing GS curriculum were gathered.

A new Junior Secondary Science Curriculum (JSSC) has been implemented in Hong Kong since September 2000. Developing pupils' problem-solving skills is one of the main aims of the new curriculum. This case study analyzes how teachers create environments to develop pupils' problem-solving skills through teaching a science theme entitled "The wonderful solvent—water" in Hong Kong junior secondary classrooms. Data were collected from classroom observation and post-lesson interviews. By demonstrating series of events that made up the entire learning experience of the students in classrooms, this article will illustrate how students carried out problem=solving processes, which include generating ideas, making interpretations and judgments, and using strategies to manage the complexity of situations. This study experiments are adopted in science lessons. Finding s also indicated that students are well motivated and their skills can be enhanced if decision-making authorities in designing setups, procedures and ways in solving scientific or technical problems have been devolved to them.