This worksheet is meant to follow a lesson/lecture on what makes a story newsworthy (timeliness, proximity, prominence, oddity, consequence, conflict, human interest). Students will read 20 headlines and write a sentence or two about why the story is newsworthy (or maybe why it is not). This exercise can be assigned as homework, or completed in class individually (or in pairs or small groups.
If you're interested, there are slides available in my store (Powerpoint slides: What makes a story newsworthy?). Those would be an excellent precursor to this exercise.