Popa is right that you should consider putting them to bed somewhat earlier. Nowadays so many people, both kids and adults, are chronically sleep-deprived, which causes all kinds of problems with learning and behavior and mood.
After I first wake up my (small) children, they like to have a minute to lay in bed after waking up before they actually get out of bed. I often turn on energetic music in the living room, usually the same CD they like. That seems to work really well. Hatzlacha!