The Child's Changing Consciousness as a basis of Pedagogical Practice. A cycle of lectures with addenda by Rudolf Steiner. Given in Dornach April 15 to april 22, 1923 (CW 306)
For your convenience, below is a zip file of this entire set of lectures. It does require that you have an unzipping utility of some kind on your computer. For you mac people this is built in.
The Entire Book The Child's Changing Consciousness as a basis of Pedagogical Practice