A favourite website and learning tool of mine, Quizlet, has just added new feature. Now you can add diagrams for students to correctly label as part of learning sets.
I have not actually had the chance to experiment with the feature yet but will be sure to do so in the next few days. At the moment I am wondering if it could be good for revising writing structures (introduction with reason for writing, paragraph topic sentence, colloquial language etc) and tips and advice for different parts of cambridge exams tests (I.E. underline important answers, identify and number reasons for your answers etc.)
For more information you can read there blog post here https://quizlet.com/blog/build-labeling-games-with-quizlet-diagrams