In this editorial, we discuss the affordances and challenges of emerging technologies in designing and implementing STEM education as a planned theme of this special issue. We view that emerging technologies, such as artificial intelligence (AI) and virtual reality, have a double-edged sword effect on STEM learning and teaching. Exploring the effect will help provide a balanced view that simultaneously recognizes the benefits and pitfalls of the technologies and avoids overstating either one. This themed issue highlights how immersive and AI-driven learning environments advance and transform STEM education in different contexts. It consists of this editorial, three research reviews, and two empirical research articles contributed by scholars from five different regions, including Australia, Hong Kong, mainland China, Singapore, and the USA. They discussed the educational, social, and technological effects of emerging technologies. Each article discusses to various extent about the current research status, what and how the technologies can afford, and what concerns the technologies may bring to STEM education. © The Author(s), 2023.

In this chapter, we give an overview of the mathematics teacher education in Hong Kong. Against this background, the contents of the preparatory programme for pre-service and in-service mathematics teachers offered by the Faculty of Education at the University of Hong Kong are reviewed. Important stages of changes of the programme in the past decade are traced, and the content of the mathematics-related component is analyzed. Four issues on preparation of mathematics teachers are then discussed. They include: understanding of the mathematics curriculum, mastering of generic teaching skills and the teaching of specific topics, the development of basic needs for an era of information technology, and the development of teachers’ ability of self-reflection.
[Copyright © 2010 Sense Publishers. The publisher web site is located at https://www.sensepublishers.com]