How do you get your children to understand when its time to get up simple stay in bed until you see the sun this updated version of the gro clock uses fun images of the stars and sun to communicate when to go back to sleep and when its time to get up due to popular request this 2010 version of the gro clock has a new feature allowing parents to choose whether or not to display the digital clock during the usual stars to sun countdown so for older children they can now start to learn