Stalled sprites provided students with a visual indication of a break or incorrect connection somewhere in their circuit, which often triggered checking for missing components or erroneous connections. In two simulations wires and appliances would snap in to place when close to a connection point, but the distance at which this was triggered, varied. For example, in Electronics for Kids the distance was approximately 1 0 mm, while in Experiments, the distance was only 2- 3 mm.