I found some interesting views in this book http://www.amazon.com/Brain-Rules-Baby-Raise-Smart/dp/098326... - there is an associated website which might include some of the content. http://www.brainrules.net/. One interesting point the author makes is the importance of teaching children to identify non-verbal cues and cites studies showing that young children who are taught sign language (and are not hearing impaired) have a higher probability of success in later life. The following pdf could also give you some ideas http://www.dgmt.co.za/files/2013/05/More-than-Counting_web.p... - aimed specifically at math development between 0 and 5 years.