Montessori continued to extend her work during her lifetime, developing a comprehensive model of psychological development from birth to age 24, as well as educational approaches for children ages 0 to 3, 3 to 6, and 6 to 12.
蒙台梭利在她的平生继续扩展工作，发展了从出生至24岁的心理发展的全面的模型，这亦是给处于0至3歲，3至6歲和6至12歲各個年龄阶段的孩子的教育方法。