Well metal detectors can help to save a life in the event that someone has a weapon or is armed, the dectector can sense the metal in a gurn, for example, which can sve lives because if that person meant harm on others, the gun can be detected before somethinf terrible happens. Hope this helps!
One of your students forgot their book on the table.
Remember, theme is "TheMessage" in the story. Grab supporting details that could include "because, as, etc." That explain some specific action happening. Always look for the cause and effect in the stories. When you explain in detail, you write "and this supports the theme of the story because (your answer here). Remember to start your conclusions with "Therefore, So on and so forth, In conclusion, etc." Hope I helped! (: