Eddie Woo is the head mathematics teacher at Cherrybrook Technology High School in Sydney, Australia. He has been teaching mathematics for more than ten years. In 2012, Eddie started recording his lessons and uploading them to YouTube—creating “Wootube.” Since then, he has amassed a following of more than 600,000 subscribers, and his videos have been viewed more than 33 million times. In 2018, Eddie received Australia’s Local Hero Award and was named one of the top ten teachers in the world as a finalist for the Global Teacher Prize.