The school principal is arguing in favor of supplying all students with laptop computers that are preloaded with textbooks and a word processing program. Which source will most likely provide support for the principal's argument? "Pros and Cons of Digital Textbooks," Leslie Mann in the Chicago Tribune "Best Laptops Under $500," by PC Magazine "50 Education Technology Tools Every Teacher Should Know About," on www. edudemic. com "The Digital Textbook Playbook," by the U. S. Federal Communications Commission