I remember when I was about 9 there was a girl at school with only one arm. At first it worried me, but then I became fascinated (even though we didn't know each other really). So sometimes when I was at home me and my sister would tuck one of our arms into our shirts and try and do normal everyday things with only one arm. My brother said it wasn't very nice as it seemed we were making fun, but we honestly weren't. We just wanted to know how it felt like having one arm, sort of like an acceptance strategy. It's a shame all children don't approach a person's differences like that and become more forgiving rather than hostile and bullyish. I was no longer uneasy of the girl's one arm (even though I never showed her that I was uneasy about it because I knew it might hurt her feelings). But a lot of NT kids would approach a difference they were uneasy of by bullying or taunting and treating them like they had a contagious disease or something. That's how I got treated by my peers, when I was older (in my teens).
It's cute how a 9-year-old with AS and ADHD, and a 10-year-old with learning difficulties, dealt with a child's difference without hurting the child but instead trying to understand what life was like for her without pestering or asking her questions.