This book presents research on the concept Pedagogical Content Knowledge (PCK) in Science Education. Many times, science educators lament that science students, especially during the transition from primary to secondary school become switched off and disinterested in learning science. This issue has yet to be fully remedied since student's science performances on international exams such as TIMMS have not improved for over a decade. In the Caribbean, performance in science at regional exams is no different. Governments normally task science teachers with the responsibility of helping develop scientific literate citizens since science is viewed as the engine that drives any country's economy. In the syllabus of many countries, teachers are to help students value and develop an appreciation for science. This book therefore presents an examination of different science syllabi and makes a case for developing a new PCK model that includes affect.