It is amazing what these girls understand. If you say to them “dance! dance!” they will stand still, “march” in place and move their arms and legs! They are dancing! And, of course, they do it with a great big smile across their face, too!
And, if you say “show me your muscles” they will make a fist with both hands, tighten all their muscles, “grit” their teeth and tense up to “show” their muscles.
They both do these things on “command” now, vs. before you had to show them what to do.
They are little sponges of information. 🙂