http://brainrules.blogspot.com/2010/07/introduction-brain-rules-for-baby-how.html
I am so enjoying Markus learn new things, each day he figures out something new. We are currently learning how to descend bum first from the sofa. He know waves to us first, without prompting- Very cute. However, he hasn't yet learn that our bed has an edge to it. He has yet to fall out of the bed, but I think it will be soon..