Explain the use of graphics in a presentation, including how they can be effective as well as ineffective. 250–350 words, citing at least 2 approved sources using current APA formatting. Approved sources include a full-text, peer-reviewed articles retrieved from online library journal database. No general Internet searching is acceptable. Therefore, blogs, education sites, commercial sites, Wikipedia, About.com, editorials, abstracts, online books, or book reviews are not acceptable