As others have said, the question is too ambiguous even by normal /. poll standards. I'm interpreting it to mean a traditional 20-25:1 student to teacher ratio K-12 classroom (although we obviously have many broken districts where an insane ratio of as high as 60-70:1 exists).
At the moment, most teachers who are provided with laptops, electronic whiteboards, digital projectors and document cameras tend to use them as analogous replacements for - or supplemental to - traditional teaching methods.
The standardized curriculum enforced in most public school districts according to state and federal guidelines haven't changed much in the last fifty years, except to become more restrictive in the material that has to be covered and the manner in which it is covered. When teachers are forced to cover all of this material in preparation for the multitude of standardized tests their students have to take each year, they have little time to learn new technology or how to employ it in creative and fruitful ways. Exceptional teachers can always shine, even under the current system, but from my experience they see these curriculum guidelines and all of the attendant bullshit as obstacles to overcome in teaching their students.
I'm fascinated by the Khan Academy's approach, as in the example of the Los Altos, CA district that is experimenting with using the KA website and software (http://www.khanacademy.org/video/the-gates-notes--teachers-in-los-altos?topic=talks-and-interviews). Their idea was to have the students be given accounts on the website, and to largely replace in class instruction by the teacher with assigned videos as homework. The students would then be able to perform practice problems on the website in the classroom with the aid and supervision of a teacher, and learn new concepts at home. In this way, every student becomes more directly responsible for their own education, working at their own pace. In a more traditional teaching model, students who fell behind remained behind, as the teacher could not hold up the pace of instruction for them, and the students who easily grasped the material would be bored with nothing to do. Under this system, the teacher can easily see where each student is, helping the ones with problems on certain concepts while everyone else moves ahead according to their own abilities.
To my mind, this solves two of the major problems under the current system. It removes the pandering to the lowest common denominator, where instruction is aimed at a fairly low level for every student in the classroom, still missing those who really need help and holding back the rest who are easily capable of more challenging material. It also allows for extremely detailed analysis of where each student's capabilities currently lie, which is largely the function standardized testing purports to serve, but grossly fails at. A teacher can look on the classroom reporting suite, and see at a glance where the trouble spots are, how far the advanced students have gotten, and detailed breakdowns of practice sessions, such as how many minutes were spent on which videos, how many practice problems were answered correctly or incorrectly, how many times the student asked for hints, etc. With standardized testing, you only get a hazy snapshot of a students abilities at a given moment, influenced by how alert they are at the time they took the test (are they well fed and rested?) and how seriously they take the test (which is hard to do when they take as many as 20-30 a year). With the Khan Academy, the badges, points and awards offer an almost MMO achievement/leveling feel of entertainment and addiction, and a report at any given time exactly reflects a student's participation,
The problems are obvious.
Not all students have ready access to devices for viewing the videos outside of school, though many districts have adopted the one laptop per child initiative, and I think in the near future we'll easily be able to provide each child with a cheap tablet type computer such as the Rasberry Pi that can easily handle youtube videos.
Unmotivated students will possibly remain equally as unmotivated. But I think Salman Khan's opinion on the true nature of unmotivated students is largely correct. Once a student falls behind, and is unable to catch up on previous concepts, he loses any desire or motivation to pay attention. In Los Altos, he claims they saw that most of the students who started out struggling and behind the rest of their class eventually caught up or even passed the average by the end of term. It seems to me that there are few legitimate excuses for students failing in this setting, and little else that can reasonably be done for them - save holding them back a grade, which is now almost unheard of under No Child Left Behind.
This method of instruction is helpful for the hard sciences, but seems harder to implement with subjects like English/Grammar, History, Art, Music, which I feel are equally important for an educated citizen, but unfortunately seem to be viewed more and more as non-essential to preparing students for "entering the workforce".