How much do you have to teach yoga to children?

We could never forget about the cat / cow, our way into down dog? 
When yoga teachers create lesson plans specifically for children, they need to understand more about just poses in a sensible order. 

Opening with a seated entering may work well for adults practitioners, but children often need a warm-up game to get their wiggles out first. 

And while growing-ups expect at least one hour-long asana sequence, 60 minutes of nonstop direction-following is a lot. To keep kids engaged, break up pose sequences with relevant games, stories, songs and mantras. 
Thank You so much!