When a baby’s eyes get big, they try to move arms & legs, and wiggle or bounce, it means they are interested in what you’re doing. If they are interested, then they are learning. So whatever it is, keep it up!
I saw this in action at Toddler Time this past week. Watch and you’ll see it too!
(And when baby”s movements become squirmy, distracted, or of the turning away variety, it means they have had enough and it’s time to move on to something else.)