by Larry Magid. A survey of online mothers found that more small children can play a computer game than ride a bike. The Digital Diaries study from Internet security firm AVG said that 58 percent of children aged two to five know how to play a "basic computer game" compared with 52 percent who know how to ride a bike. Sixty-three percent can turn a computer on and off, and 69 percent can use a mouse. By contrast, only 20 percent can "swim unaided," 11 percent can tie their shoelaces without help, and 20 percent know how to make an emergency phone call.