This easy worksheet, titled What Is It All About?, gives first graders a second pass at the core vocabulary by tracing topic, main, detail, clue, fact, and idea, then writing the missing word in sentences like "The ___ idea is what the whole passage is about" and "Every paragraph has one big ___." A true-or-false section sharpens their thinking with prompts such as "Every story has a main idea" and the trickier "The main idea is always the first sentence," which targets a classic Grade 1 misconception. The repetition cements terms before kids meet longer passages.