This book contains selected refereed papers from the 21st Annual Conference of the Australasian Science Education Research Association. The papers are as follows: "A Learning Model for Science Education: Developing Teaching Strategies" (Appleton); "Researching Balance between Cognition and Affect in Science Teaching" (Baird et al.); "Toward a Gender-sensitive Model of Science Teacher Education for Women Primary and Early Childhood Teachers" (Bearlin); "Learning in Science Project (Teacher Development): The Framework" (Bell, Kirkwood, & Pearson); "The Pupil as Philosopher" (Carr & Kirkwood); "New Data and Prior Belief: The Two Faces of Scientific Reasoning" (Dawson & Rowell); "The Influence of Gender, Ethnicity and Rurality Upon Perceptions of Science" (Dunne & Rennie);"Rediscovering Ignorance" (Edwards); "Practicalizing Piaget at the ASEP Guidelines Conference 1970" (Fawns); "The Quality of Teacher Education Programs" (Fensham & West); "Learning Environment, Learning Styles and Conceptual Understanding" (Ferrer); "Misconceptions and Light" (Fetherstonhaugh); "Scaffolding Conceptual Change in Early Childhood" (Fleer); "The Technology-Science Relationship: Some Curriculum Implications" (Gardner); "Year 12 students' Attainment of Scientific Investigation Skills" (Hackling & Garnett); "Outcomes of the Primary and Early Childhood Science and Technology Education Project at the University of Canberra" (Hardy, Bearlin, & Kirkwood); "Australian Studies: A Vehicle for Scientific and Technological Literacy?" (Jane); "Developing a Taxonomy of Science Concepts Based on a Scale of Empirical Distance" (Jones); "'Expert' and 'Novice' Subjects' Approaches to Genetic Problem Solving in a Computer-Based Setting" (Kinnear & Simmons); "The Constructivist Paradox: Teachers' Knowledge and Constructivist Science Teaching" (Louden & Wallace); "Diagram Information and Its Organisation in Memory: Exploring the Role of Skill and Experience" (Lowe); "Research into the Environment of Science Laboratory Classes in Australian Schools" (McRobbie, Giddings, & Fraser); "Development of Student Inquiry Skills in a Computerised Classroom Environment" (Maor); "History, Philosophy and Science Teaching; Current British, American and Australian Developments" (Mathews); "Focus Folklore: Reflections of Focus Teachers on the Sci-Tec In-service Project" (Napper & Crawford);"Science Education Research in Papua New Guinea 1978-1990" (Palmer); "Aboriginal Studies and the Science Curriculum: Affective Outcomes from a Curriculum Intervention (Ritchie & Butler); "Effects of Background and Classroom Characteristics on the Science Achievement of 10-year-old Students" (Rosier); "A Research Method Using Microcomputers To Assess Conceptual Understanding and Problem Solving" (Simmons & Kinnear); "Integration of Technology in the School Curriculum" (Treagust); "'What's Your Science Teacher Like?': Using Students To Appraise Teaching and Teachers" (Walsh); "Chemistry Concepts and Group Cognitive Structure: A Study of Undergraduate Nursing Students" (Wilson); "How Confident Are Primary School Teachers in Teaching Science?" (Yates & Goodrum); "The Investigation of School Effects on Student Achievement in Science: A Multilevel Analysis of Educational Data" (Young); and "Evaluation of a Course Designed To Teach Physics to Students in Physiotherapy" (Zadnik et al.). (PR)