You can define the main idea by reading a paragraph and see which idea is being repeated by the author. Or which idea the paragraph is talking about/built on. You can find the supporting details for the main idea by first finding a main idea and seeing in the text (this can be in all the paragraphs doesn’t have to be just the paragraph you found your main idea). Also keep in mind that there can be several main ideas it’s easier (/for me) to pick the main idea that has more supporting details. Makes your main idea or when your explaining your main idea easier.
