This book presents the findings of three studies on the use of diagrams in civic education. The first study presents an international comparison of textbook diagrams promoting national unity in diversity, with examples from ten countries. The second focuses on the depiction of migration in diagrammatic form in German textbooks, The final study was conducted in collaboration with teachers in Swedish social science classrooms, and focuses on teaching comprehension of flow charts and scatterplots. The book will be of interest to scholars of educational media, didactics, the history of education and citizenship education.