Digital Object NAMTA Journal 43/1-2 15 Reading, Writing and Mathematics: Explored and Discovered Rather than Taught, 2003
Digital Object NAMTA Journal 43/1-2 12 The Formation of Mind: Language, Learning, and Logic in Early Childhood, 1996
Digital Object NAMTA Journal 43/1-2 11 The Acquisition of Spoken Language: The Nebula Hypothesis, 1988