What that means to me is that they aren't comfortable with the way the material is being presented. They can't sit still. They're bored, and they're fidelity, and they can't focus on their work. When you put those children on a computer, they're focused. Their model matches what they need.
Some people are linguistically intelligent, meaning they like to read.
Others are mathematically intelligent. But then some are spatially intelligent. Others are musically intelligent. Others are interpersonally intelligent. And what happens is in our society we've just begun to acknowledge that people can be intelligent many diverse ways, and when we acknowledge that intelligence and we let them learn in a way that they are comfortable with, then you see children bloom instantly.