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