From the Great Panels collection we have a classic Calvin & Hobbes comic strip by Bill Watterson (circa 1987).
Not sure about you, but this is more or less how I did my homework in middle school too. It probably explains why my math grades weren’t quite as good as my mother preferred them to be.
Also available on Flickr: http://www.flickr.com/photos/buddyscalera/11133948615/