Teacher Rob Tarrou is helping students around the world with math, without leaving St. Petersburg, Fla, the Huffington Post reports. Tarrou has been teaching at St. Petersburg High School for 17 years, but started posting video lessons to YouTube last fall. Now, "Tarrou's Chalk Talk" has more than 300 videos covering subjects from factoring to matrices, and has more than 3,000 subscribers from more than 100 countries. With
Want to share a great resource? Let us know at email@example.com.