Mathtrain.tv is a truly inspiring site for any educator. Basically, one teacher realised that his kids were great at teaching each other and decided to harness this by creating a site full of their video tutorials on maths. You can watch the story below. Not only were they able to really push themselves in terms of their understanding, but now they receive requests from learners all around the world asking for their help in understanding this subject. What a fantastic idea. To access the videos, visit the site, but why not start one for your own subject?