hmmmm, none of the reasons you have given appear to me particularly useful.
a big screen for showing a website in a computer lab with children then using thewebsite themselves seems to me useful, as an insturction tool, but in a classroom, i am yet to be convinced of their necessity.
most kids within my socio economic area all have lots of access to technology from a very young age. and i am talking within my surroundings, not on a general national level, so that reason doesnt justify spedning thousands of pounds on them.
dont knock the old slate and chalk. as learning tools, they are still pretty amazing.
i just think that resources could be spent on other more useful things. like a fan to cool the room down in the hot summer. or blinds, to prevent the sun coming in and turning the classroom into a sauna, so that the kids dont get headaches, creatinga s uitable learning environemtn.
or, and this is the big thing with me, those resourcs could be used to provide an extra teacher? or learning support assistant. they may be fun and funky, but do they actually enable children to learn better , faster, or majke them want to? ime, no.