Informacin Montessori sobre desarrollo infantil al comienzo de la vida, para padres, adolescentes y profesionales. The author's books are always about making the lives of children, andtheir families, happy, interesting, satisfying, and geared to the stage of development of each child. Her experience in this area is broad and international. The Joyful Child is used in Montessori teacher training centers for all levels, teachers preparing to work with children from age 0-3, 3-6, 6-12, and young adults from age12-15,15-18. It is a textbook for middle school human development classes and for birth preparation classes. It is of interest to anyone studying education and child development.