This medium worksheet, Match the Main Idea, gives first graders nine fill-in-the-blank prompts that walk them through the language of comprehension, with sentences like "The title of a story can be a ___ to the main idea," "A ___ is a group of sentences about one idea," and "We can find the main idea by reading all the ___." A four-pair matching section then asks kids to label statements such as "Cats are fun pets," "Apples are healthy," "Rain helps plants grow," and "Fish live in water" as details about pets, food, weather, or animals. The page builds the habit of sorting ideas by category.