Dr. Montessori determined that each child’s individual development occurred systematically in predictable steps roughly according to age. She organized these steps into four planes and contained within the planes are “sensitive periods.” A Montessori education respects, enhances and utilizes the individual child’s natural evolution through these planes.
First Plane: Absorptive Period (Birth to 3) & Sensorial Period (3 – 6 years)
Second Plane: Intellectual or Conceptual (6 – 12 years)
Third Plane: Humanistic (12 – 18 years)
Fourth Plane: Specialization (18 – 24 years)