Science education is the most beautiful and at the same time the most challenging subject we can imagine. There are countless possible contents and methods. But how should a selection be made from them? How can science education be designed to engage children and leave lasting effects on their thinking and feelings? How do we respond in science education to what happens in school and out in the world? To disasters and wars, to environmental toxins and disputes? What are important goals for science education? Is it the ability to find happiness or social competence? Is it a wealth of knowledge or a methodological approach to experiments? To answer these and other questions, we need to think very carefully about didactics. This book opens the didactic toolbox for science education in simple language yet comprehensively. It shows what it consists of.