Good point on the arithmetic. Ok let' teach them about patterns and shapes. Let's have them play games. Let's have school field trips to museums, the woods or farms. Let's teach kids about playing together, about negotiating and all those things.
There is a big gap between "well arithmetic doesn't work before 6th grade" and "let have them live in the woods and carve long bows".
There is a big gap between "well arithmetic doesn't work before 6th grade" and "let have them live in the woods and carve long bows".