Answering the original question ; I think it should be reflective, as others have suggested. So little is known of it by the young generation [45 and below] as to be almost ridiculous.We cannot now address this suddenly and forcefeed war docu on tv.In schools, for years there has only been the second world war taught in history, in fact almost nothing else!Also, as someone has said, nothing should be taught to primary age children.
In secondary schools, the bare facts about the causes of the first war should be taught before next year [bet they won't be] and the school library can display any books of fiction or non fiction that is suitable, that is about the Great War [to end all wars, that was a bitter laugh, wasn't it?]
Since there is nobody now alive that took an active part [soldiers] in that war, perhaps families who are able to talk to children about the part that their own Grandfather played could do so? There are also recordings from old soldiers, that are very moving.