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The Kinect sensor, meanwhile, is being used in studies to help children learn to more accurately map numbers onto physical space – a simple skill but one that is fundamental to our understanding of mathematics. Most people know, for instance, to place the number 50 exactly midway along a line marked “0” at one end and “100” at the other. Researchers at Eberhard Karls University in Tuebingen, Germany, found that seven-year-olds can place numbers along such a line more accurately if they physically walk the line on the floor – with their motion captured and analysed by the Kinect sensor – than if they use a mouse to interact with a computer screen representation of the line