This simple strategy teaches students to generate a graphic organizer containing the. Then draw a box around the main-idea and supporting details and move on to the next paragraph. Use a Giant 'Main Idea Map' to Teach The Strategy. LETTS, Iowa — On Wednesday morning, before most students began their day, five English teachers and a facilitator from the Mississippi Bend AEA gathered in a sunny Louisa-Muscatine. main idea and…