Vi Hart is a professional Mathematician who works at the Khan Academy. Her work is amazing and I love her energetic videos about mathematical doodling and the Fibonacci numbers. Her website was recommended to me last week and I’m really pleased to have been introduced to her work – it’s truly inspirational. Click on the screenshots to view her website and youtube channel respectively. I’ve also added her blog to the “Blogs and other sites I’ve used” list on the right hand side.