You know the saying about how those that can't do, teach? Well, Mark Zuckerberg probably wouldn't agree.

When he's not running Facebook and launching new products, Zuckerberg moonlights as a middle school teacher.

He told Wired that once a week he teaches a young students a class on "how to build a business" in Menlo Park, California.

"Every Tuesday we go over one skill, and each group has a side project," Zuckerberg told Wired. "When the class ends, they’ll come to Facebook and sell the products they’ve made, like they’re marketing them." Zuckerberg did not divulge the precise location of his teaching gig, but the Mercury News published a January article describing the entrepreneur's involvement in a class for middle school students at the local Boys and Girls Club.

"It's an amazing experience for the kids. It's one of the most exciting business people spending time with them," Peter Fortenbaugh, executive director of the Boys and Girls Club of the Penninsula, told the Mercury News.

Besides teaching, Zuckerberg has other side projects cooking. Every year, he gives himself a personal challenge. His previous challenges have included learning to speak Mandarin, setting aside time to program each day for a year, and only eating meat from animals that died by his hand.

This year the CEO wants to meet a new person every day--outside his social network, that is. Zuckerberg told Fortune, "I'm meeting one new person outside of Facebook every day. Who doesn't work at Facebook. It's going well--I've done a bunch of things in the community and just tried to get broader exposure."

Published on: Apr 5, 2013