When one of Liz Kleinrock's fourth-grade students said the unthinkable at the start of a class on race, she knew it was far too important a teachable moment to miss. But where to start? Learn how Kleinrock teaches kids to discuss taboo topics without fear -- because the best way to start solving social problems is to talk about them. Check out more TED Talks: www.ted.com The TED Talks channel features the best talks and performances from the TED Conference, where the world's leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design -- plus science, business, global issues, the arts and more. Follow TED on Twitter: www.twitter.com/TEDTalks Like TED on Facebook: www.facebook.com/TED Subscribe to our channel: www.youtube.com/TED