This picture shared by a talented teacher in the online class I teach. We’ve been discussing plagiarism and copyright. This site by Colin Purrington also contains effective strategies for teachers, administrators, and college professors for teaching copyright and plagiarism.
Picture Source: Purrington, C.B. Preventing Plagiarism. Retrieved July 28, 2014 from http://colinpurrington.com/tips/academic/preventing-plagiarism