Plane 1 · 0 to 3 yearsInfant & Toddler
The Absorbent Mind
During this sensitive period, children absorb their environment effortlessly. Our materials support motor development, sensory exploration, and language acquisition.
Four planes of development
From birth to adolescence, in four distinct stages
Maria Montessori observed that children pass through four developmental "planes", each with its own character, its own sensitivities, and its own materials designed to meet them.
Jump to age
What are you looking for?
Plane 1 · 0 to 3 years
Plane 2 · 3 to 6 yearsPrimary / Casa
The Conscious Worker
Children begin to classify and order their experiences. This is the prime time for developing practical life skills, sensorial refinement, and the foundations of mathematics and language.
Plane 3 · 6 to 9 yearsLower Elementary
The Reasoning Mind
Children develop a reasoning mind and moral sense. They are drawn to big questions, collaborative work, and understanding the interconnectedness of knowledge.
Plane 4 · 9 to 12 yearsUpper Elementary
The Social Being
Pre-adolescents develop critical thinking, social awareness, and deeper abstract reasoning. They seek to understand their place in society and history.
The four planes of development
Maria Montessori divided childhood into four distinct six-year periods, each with its own needs and gifts.
- 1
0 to 3 years
Infant & Toddler
The Absorbent Mind
- 2
3 to 6 years
Primary / Casa
The Conscious Worker
- 3
6 to 9 years
Lower Elementary
The Reasoning Mind
- 4
9 to 12 years
Upper Elementary
The Social Being
Not sure which age range?
We'll help you match materials to the child in front of you
We'll look at your child's current interests, developmental moment and the materials you already own, then point you to what fits.
- Free guidance
- Answered by the founder
- Response within a day
