*Note writing on inside cover and on sides (see photos). High school; ninth grade; tenth grade. Holt McDougal World History: Patterns of Interaction is a highly integrated program that provides teachers with a practical and motivational approach to teaching world history and to helping students think critically and reflectively. It combines a highly visual approach with primary sources to help all students understand world history and make global connections. It emphasizes the big picture by connecting key concepts, themes, and patterns of interaction found throughout history.