Like the previous editor noted, there are pros indeed but there are also cons.
The pros that I have encountered as a teacher of languages are
a) The students in the 21st century are so used to multimedia alternatives that they may create more connections through the screen than through the book, after all, chances are that the screen will provide more visuals than the book and will engage them more.
b) The students will have a chance to have big, bold, and bright words in front of them rather than small print words in a page. I insist on the fact that kids hate squinting.
c) Students might be able to read at a faster speed and actually train the eye to go faster as the words change. Kind of the karaoke machines that makes us better and faster singers (...)
The cons are that
a) Students who are ADHD may or may not benefit from a shiny, visual, bright program that will absorb their attention completely from the reading.
b) Like the previous poster said, some kids with learning disabilities may not keep up to speed.
c) THE MOST IMPORTANT: Never replace a TV with a book. Use the TV as enrichment or remediation, but the feel and touch and need for focus that comes as a result of concentrating on printed information is invaluable to teach students at this age group to sit and focus, rather than shift from task to task achieving less.
1) You do not need to purchase class sets of books you may use only for a short time, or in small sections
2) You can enlarge the print so it is easier to see, or only include the sections you want to use
3) Students do not have to deal with a bulky text, or finding the correct section
1) Students in the back or with poor vision have a disadvantage that you would need to adjust for
2) Not all students read at the same rate, so it is more difficult for students to work on their own
3) When practicing reading out loud in the younger grades, only one person could read from the screen while the rest can tune out, or they read as a group where you can't hear mistakes they may be making, therefore you can't correct them.
Reading text from a TV may help kids more because they may be audio visual, plus it helps the brain remember the material by associating it with not just words they had read, but pictures they saw and sounds they heard. Some bad things might be that the noise can be distracting for some children or the visualizing might be scary in some kids cases.