Yes, kids love these high-tech devices, and happily play with them for hours. But just because a child does something willingly doesn't mean that it engages her mind. Indeed, most software for children turns lessons into games. Such instant gratification keeps the kids clicking on icons while discouraging any sense of studiousness or sustained mental effort. A real teacher gives both technical skills and human interaction.
Computers promise shortcuts to higher grades and a painless education.
Equating learning with fun says that if you don't enjoy yourself, you're not learning. Most learning isn't fun. Learning takes work. Responsibility you have to do your homework. Commitment, from both teacher and student.