So stupid

'taller doesn't always mean more' *washes mind with soap*

I learned about that yesterday in my psychology class. Up until a certain age, children don't understand things like this. It's the same if you take 10 pennies and put them into two rows of five. They will say the rows have the same number if they are the same length. If you spread one row apart so it's a little longer than the other, even though the child counted them before, said they had the same amount, and saw you spread one row apart, they will still think the row that looks longer has more. It can be frustrating when teaching a child things, but people should understand what the guest said in the last sentence of their comment. Sorry for the long comment by the way. :)

When I was 6 or 7, my teacher did an experiment like this with the whole class, I'm not sure about anyone else but the thing I found most confusing about the experiment was that it seemed like a trick question, it was obvious that they contained the same amount because the teacher told me so.

By 6 of 7 most kids will have figured it out. I think it's age 3 or 4 that cognitive development surpasses this. Something like that.