When teaching my students how to find the main idea, we first have to search for and find the important details. After stopping and jotting important details we use those to write one sentence that is the main idea. After, we take the main idea + the details to write a summary being sure to include details from the beginning, middle and end. Included in this purchase is a graphic organizer that has students find the details, main idea and then use that to write a summary. The second document is a half sheet used to find details and the main idea to be used with multiple paragraphs or stanzas.
*UPDATED: I found the details squares to be too small so I reformatted them to be larger (page 3)