The Absorbent Mind
By Maria Montessori (Holt Paperbacks)

The Absorbent Mind was Maria Montessori's most in-depth work on her educational theory, based on decades of scientific observation of children. Her view on children and their absorbent minds was a landmark departure from the educational model at the time. This book helped start a revolution in education. Since this book first appeared there have been both cognitive and neurological studies that have confirmed what Maria Montessori knew decades ago.