As schools around the world close, Salman Khan knows he can make a difference. “We set up a war room to help families,” he says. “We started with the idea that parents are overwhelmed right now.”
The founder of nonprofit Khan Academy, one of the most popular online learning sites, Khan, 43, has spent the last 12 years developing hundreds of free classes, from math and science to history. He’s also the father of three homebound kids, ages 5,8 and 11…..………………..