Graphic organizers are visual tools that help students organize and structure information by illustrating relationships between concepts. The document discusses several types of graphic organizers like T-charts, Venn diagrams, fishbone diagrams, and lists their functions. It explains that graphic organizers increase student engagement, facilitate cognitive processes, and improve comprehension by allowing students to break down ideas visually. Overall, the document advocates that graphic organizers are powerful teaching tools that can enhance the learning process.