Mindmapping for an oral exam

My “terminale” students (upper sixth formers) take an oral exam at the end of the school-year. It consists in an oral presentation of an unknown visual document (poster, photo, cartoon, etc) or very short text about topical issues such as youth, technologies, global warming, food, immigration etc. I createdthis mindmap (using FreeMind) to help them cope with the exam which they usually find quite difficult not only for lack of vocabulary but also for lack of methodology.