I can see why you are concerned, but I bet it's just a normal stage of curiosity. My daughter wants to grab the screen and pull it toward her to hug or kiss many of the animals,
! I'm sure he will grow out of it soon and will begin to understand without a problem. Also, you want to keep the lessons interesting and fun, so don't worry if his interest wanes now and then. I agree with the previous post as well, in keeping things as normal as possible.