Talk about invitations to speak to kids. When my kid was in third grade, they invited Dads (sexist, I know) to talk about their jobs to the kids. My daughter told me that the week before, the dad was a homicide detective and told them about murder! No trigger warnings in those days. So, what should I do? Well, I went to the lab and got a big jar of dog brains and a sliced up human brain embedded in lucite sections, like a loaf of bread. Kids loved that!
I also showed them some illusions, like the ones I posted here. I asked one kid why do we see them and a third grade boy nailed the major theory perfectly. So I called up my buddy who wrote the major theoretical review of the illusion and told him a third grader nailed his theory. He told me to go quick and show the kid another one we don't understand!!