"You have to be an artist, but you have to be a business person too."

At the Great American Teach-In on Thursday, students learned about making flan, becoming a certified public accountant and surviving cancer. And all that came from just one speaker.

David Hastings, a CPA who with his wife owns Gulfport's Habana Cafe, showed students at Boca Ciega High School how to caramelize sugar for flan, and explained how he works out food costs at the restaurant.

Read more at the Tampa Bay Times.