Recently I discovered this cool website that allows you to make storyboards for various educational concepts that your students may find difficult to take in. It works in somewhat the same manner as BitStrips and lets you visually show examples of concepts such as plot twist, inner dialogue, and conflict. I actually used this in my classroom the other day to teach the four different types of literary conflict (man vs. man, vs. self, vs. society, vs. nature). It turned out great, and even my lower students were able to understand that content quite easily. I would suggest using it when you are already thinking of using a visual aid.