Use Incredible Shrinking Notes to reinforce Summary of informational text. This is the perfect lead into main idea and supporting details. Students will read an article using active reading strategies and summarize the article. They will then have to reflect on their summary and refine the summary leaving out details that are less important. Finally, they will record the most important idea, on the smallest card. Many students will have that AH-HA. OMG, it is the main idea. The most important idea! Best teacher moment to see those eyes light up when they see it for themselves.