 Let a child learn mathematics by speaking in mathematics about things that really matter to them. So at MIT we've given computers the power to turn motors, to make sounds, to draw pictures, and we've found ways of giving children the power to control the computer. Now they'll put the little tunes together to make a bigger one. Music Sometimes I get into bugs like this and it'll, um, when it was doing it in his mind, the little turtle, the little triangle thing, was on an angle so it drew the picture on an angle. A computer-controlled turtle is made to draw and dance by programs so simple that all children invent them in the first days of the course. Thus the child acquires a taste for math power that grows and grows as his projects become more original, more complex, and more varied.