When content is presented spatially and paired with visual imagery, many students are better able to grasp meaning and comprehend ideas more easily. Some students are challenged to learn complex concepts and facts when their knowledge frameworks are weak or disorganized. Many of these students are visual learners, and benefit when they are shown pictures, diagrams, maps and graphic organizers. For this reason, every content page in this book is designed with at least one visual element to augment the content. The book employs a multitude of visual learning techniques to enhance thinking and learning skills.