Select some music that the children like and is easy to dance to. Start by performing dance moves yourself and asking the children to copy your moves. After your turn, ask the children if any of them would like a turn at the front of the group and all the other children will copy their moves. Keep each choreography time to about 20 seconds. Keep asking if any more children would like to have a turn until all children that would like an opportunity have participated.
Source: Chris Wright