I got nothin'. My youngest was a fan of Sylvia Plath at five, and debating astronomical facts with the museum docents at seven, but didn't learn to tie her shoes until 12 and still can't figure out the front door lock. Isn't asynchronicity supposed to be a hallmark of gifted kids?
As for "most of these children are a full two to five years beyond grade level by age six"...a lot of kids I know are there, because I know a lot of homeschoolers. Not that homeschoolers are preternaturally bright-- but because IME, they tend not to worry about "the proper time to learn about fractions is age eight", or whatever. Johnny's curious about fractions? Good on him-- let's teach it.
