yeh i have been taught through a projector for quite a long time now. its in every single room in my school. you might of heard of it on televison or on the news somewhere. its reputation is really high. even the prime minister even visited the building.
heres a link to to it
http://forums.xisto.com/no_longer_exists/
the porjection jut makes the teaching easier for teacher i think. but i dont think it take much effect on the students. it can only show pictures and stuff like that to show to the students. like that phrase "a picture tells a thousand words".
smart boards even make it easier acting to replace the old traditional balck or white marker boards. just does the exact same thing.
only bad thing about this there are bugs like viruses. there are so much problems on the computers in my school they had to reformat everything once in a while.
while the teacher are teaching me and writing on the smart board, the computer even freezes for nothing. slows down the lesson dramatically!