This book focuses on teaching ethics in primary science classrooms. Such teaching is important because it engages students not only in the human aspects of science, but also in science more generally, leading to enhanced scientific literacy and ultimately contributing to responsible citizenship. Teaching ethics in science also presents opportunities for developing students’ argumentation, critical thinking and decision-making skills, and helps students become more ethically aware, knowledgeable and discerning in science. Ethics in science has a prominent role in the New Zealand Curriculum within the ‘nature of science’ strand in the science learning area. However, there is a paucity of research demonstrating how this might be implemented with primary-age students. This work determines firstly whether primary students can engage in ethical discussions in science. Secondly, it focuses on the question of support needed for primary teachers and whether it is helpful for teachers to use a subject-specific planner for teaching ethics in science.