M is too young to learn these concepts or to even imitate me, but I am going to begin listing ways to teach a child science using everyday objects, everyday actions. Notes to self.
M picked up a stainless steel cup and handed it to me. I looked into it, I blew into it, I spoke into it.
Perhaps even the percentage of water vapour in inhalation vs exhalation. But not until she's much older, I suppose!