Sounds tough doesn't it? But for such complicated sounding words, they actually are pretty simple.
Visual Brainstorming-
Visual Brainstorming means working out ideas in images instead of words. If you are brainstorming things that you like, and you like your dog, then you would draw a picture of your dog rather than write down the word dog. We are so used to using words that we often find it hard to translate the words into images. But if you are using pictures as a way to express ideas, it is easier to go from one picture idea to another. Visual Brainstorming is all about thinking in images. Just like regular brainstorming, you fill a page with ideas before choosing one to work on.
Compositional Brainstorming-
Composition means how something is put down on the paper. Is it big? Is it small? Do you use texture, line, color? Where? It is composing a picture, using the space so that it looks visually pleasing. Compositional brainstorming means placing the image on the page in different ways to try it out. Would it look better really small or really big? What if it went right off the paper? What if I turned it horizontally? Can I add more things in this corner? When students draw their final drawing right from the start, they may not have thought things through. Compositional brainstorming gives them time to consider size, shape and space before they decide what their final work will look like. It's a form of brainstorming that allows for revision of ideas. Art is often spontanious, but art is also carefully thought out in order to best portray an object or an idea.