This has to be the best invention for parents since disposable diapers. A few months ago we had problems with Grant waking up at 2am and going down in the basement to play Legos. He didn't get the concept of time nor how to read a clock. I then found the Teach Me Time! Clock. This clock will glow an orange, green or no glow at all. I have it set to go from the off state to the "orange glow" at 6:30pm. We put the kids to bed about 7:30pm so it also doubles as a nightlight. It stays orange all night and then turns green at 6:00am and then turns to the off state at 7:30am. So with Grant and Anna we told them that they can not get up until the clock turned green. I have to say that this has been an absolute life saver. If your children can't tell time this device is well worth the $40 for a good night sleep.

Here is a picture of the clock glowing green.