You could have computers for each student in the classroom, but I imagine that would be quite expensive.
I don't see the problem with a projector. The teacher can control what material is displayed, and can thus choose to display relevant material for the current lesson. Yes, this relies on the teacher knowing what they're doing, but the entire school system does anyways. If a student wants to have their own reference in class, it would be cheaper and more educational for the student to take notes on whatever topics they found interesting or wanted to have on paper.
I'd be interested to look at those studies, though.
I'll try to find a few online and post them here when I have more time. But the gist is that there's a cognitive advantage to reading which in turn means reading along causes the material to be absorbed better.
I've tried to think back to my own experience to verify the findings but I can't think of any definitive examples for or against
I don't see the problem with a projector. The teacher can control what material is displayed, and can thus choose to display relevant material for the current lesson. Yes, this relies on the teacher knowing what they're doing, but the entire school system does anyways. If a student wants to have their own reference in class, it would be cheaper and more educational for the student to take notes on whatever topics they found interesting or wanted to have on paper.
I'd be interested to look at those studies, though.