The Montessori manual for children aged 0-6 years focuses on the developmental needs and characteristics of children during this critical period, as well as the theoretical framework guiding their education. This stage is referred to as the “First Plane of Development” in Montessori philosophy, characterized by rapid physical, psychological, and cognitive growth. The Montessori method for ages 0-6 prioritizes self-directed learning through hands-on activities that align with natural curiosities.