In the past few decades, increasing demands have been placed on developing students' autonomy and critical thinking skills. To enhance students' agency in learning, teachers have been encouraged to adopt alternative pedagogical practices. The revamp of pedagogy needs to be reflected in assessment as it is an integral part of instruction. Practising teachers, however, lack assessment knowledge due to inadequate training during the pre-service preparation programmes. The enhancement of assessment knowledge is being urgently called for, which demands the professional development of teachers. This study seeks to investigate the impact of a professional development programme organized by a university in Hong Kong on the development of assessment knowledge of four teachers in two elementary schools. Findings indicate that the acquisition of assessment knowledge is a long-term achievement, which requires ongoing professional development efforts. Copyright © 2019 Informa UK Limited, trading as Taylor & Francis Group.

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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