Do the previous lesson (From crawling to sitting) first! This is just an experimental add-on, a little trial of some ideas, an exploration to see what happens, tacked on at the end of the lesson for those who would stay.
A little bit of this with the hands, a little bit of that with the feet… yes, shoulders and hips. But can we put it all together into something functional? For a baby at least? Find spiral transitions and stealth twistings of the long axes of the arms and legs?