Mom, why does my classmate act that way?
There are many disabilities in our world. Some are easy to see, like a wheel chair or a person with a seeing eye dog. The child might not know details, but they can get the gist that the person needs help getting around.
But what about kids whose difficulties aren't as easy to pin point?
I went to school with a kid who had tics. He blinked a lot and would make funny looking hand gestures over and over again. I had NO idea what his deal was and while I never made fun of him I was also a little bit weirded out by his behaviors. I just didn't understand that he was perfectly normal, but his brain made him do some things over and over again.
What will you be teaching your child about children who are different from them? They will encounter people like this at school for sure, with the push for inclusion classes.