Colin Graham is a teacher, trainer, coach, linguist, singer, musician, composer, and arranger. He spent 10 years as a computer programmer and statistician before retraining as a secondary mathematics teacher. After returning from 11 years of teaching in Japan, he founded, and now moderates, #MathChat, an educational discussion that occurs twice a week on Twitter. Colin has presented about Twitter, differentiation and mathematics at several TeachMeets, and he is particularly interested in the integration of technology, both new and old, with effective methods of teaching and learning. Colin is currently working on a series of mathematics masterclasses using origami and paper engineering to cover most of the standard 8-14yo curriculum requirements.