A graphic organizer can help you understand the texts because it facilitates comprehension, memorization and analysis. It allows, instantly, obtain a clear general idea of the subject, to select and deepen the basic contents and fix them better in the mind. Also a graphic organizer rescues important aspects of a concept or subject within a scheme using labels.
They help focus what is important because they highlight concepts and vocabulary which are key and the relationships between them, thus providing tools for the development of critical and creative thinking.