If you are looking for some great free resources for teaching your baby art, history, science and more check outwww.theclassicalmommy.com/bitscollection.html.  This website and all the bits of information on it are created by a mother who spent a lot of time gathering this information.  You can go there and download the files and play them on your computer or print them out and turn them into books.  This is a great site that you will want to bookmark.  Here is a list of the categories to choose from.