Every once in a while, Summy does something that seems amazing to me. What things our kids do aren't amazing, no matter how trivial?
She adds small numbers, but that's not what's amazing. She does it inside her head, no fingers or dots on paper. She does not remember that six and five make eleven. So that's not what I mean when I say she does it in her head.
She closes her eyes and as far as I can understand, she visualizes six things and five more things. And then counts them to get the total. It might sound simple enough, but I've tried it and it's hard for me.
Miss Calculator does miscalculate now and then, but still, it's impressive to me.