What activity would be most effective in helping learners develop their skills in summarizing information?

Creating a headline for a news article is an effective activity for helping learners develop their summarizing skills because it requires them to distill the main idea of the content into a concise and engaging phrase. This task encourages critical thinking about what information is most important and how to communicate it clearly and succinctly, which are key components of summarizing. When learners craft a headline, they must consider the essential elements of the story or information being presented, enabling them to practice identifying and articulating the core message succinctly.

In contrast, writing a detailed report tends to focus on elaboration and comprehensive coverage of a topic, which may inadvertently lead to the inclusion of excessive detail rather than summarization. Participating in group discussions can help develop comprehension and synthesis skills but may not specifically target summarization. Compiling a bibliography, while important for research skills, focuses more on compiling references rather than summarizing content or extracting main ideas.