My five- and seven-year-old constantly fight over who gets the iPad first. We have one, and they get to use it in tiny doses, usually when I'm at my wit's end. Their favorite app? ScratchJr, MIT's ...

It’s a Sunday morning at East Dulwich Picturehouse in South London, and a group of three- and four-year-old children is playing in a backroom. But not with cars or dolls. Instead, they are learning ...