Of the eight high schoolers in the class, just the hands of the two boys shot up. They had experience hacking at home. One had hacked his Nintendo video games, the other jailbreaked his iPhone. The six other girls? Not one raised their hand. They didn’t feel they had the experience or confidence to imagine that they could program an app. But by the end of our co-ed Explainers as Designers program, the girls had not only created mobile phone apps, but they won the competition to get their apps created professionally.