Oftentimes, some students are especially challenged to learn complex concepts when their knowledge framework is weak or disorganized. Many of these students absorb material best as visual learners, and benefit when they are shown pictures, diagrams, graphs, maps and graphic organizers. For this reason, just about every content page in the book is designed with some visual element to supplement the written content. The book also employs a multitude of visual learning techniques to enhance thinking and understanding. When content is paired with visual imagery, students comprehend ideas more easily.