The Planes of Development
November 30, 2022

Maria Montessori based her entire educational philosophy on the idea that children developed through a series of four planes. Each of these planes is easy to recognize and has clear, defining characteristics. If we study and understand these stages, we can approach our interactions with children with a new perspective. 

Four Planes of Development

Learning about the planes of development isn’t just for Montessori educators. Understanding your child’s development can help at home, too. 


The First Plane: birth-6 years


During this stage children absorb everything like sponges. They are, indeed, excellent examples if what Montessori called ‘The Absorbent Mind.’ This is a time in which we are able to utilize what Montessori called sensitive periods of learning. While each child is different, there are typical patterns that emerge in regards to brain development and general readiness to learn particular skills.


During the first three years of this plane, all learning is done outside of the child’s conscious mind. They learn by exploring their senses and interacting with their environment. During the second half of the plane, from about 3-6 years, children enter the conscious stage of learning. They learn by using their hands, and specialized materials in the Montessori classroom were developed with this consideration.


During this time, children have a wonderful sense of order. They are methodical and can appreciate the many steps involved in practical life lessons in their classrooms. The organization of the works on their classroom shelves is intentional, which appeals again to this sense of order.


The first plane is a time in which children proclaim, “I can do it myself”; it is a time of physical independence.


The Second Plane: 6-12 years


During the elementary years children begin to look outside themselves. They suddenly develop a strong desire to form peer groups. Previously, during the first plane, a child would be content to focus on their own work while sitting near others. In the second plane, a child is compelled to actually work with their friends. It is during this time that children are ready to learn about collaboration.


During the second plane there is a sudden and marked period of physical growth. This may be a contributing factor to the observation that many children of this age seem to lack an awareness of their body, often bumping into things and knocking things over. Children begin to lose their teeth around this time as well. Their sense of order and neatness tend to fade a bit during this plane.


Throughout the second plane, children’s imaginations are ignited. Since Montessori education is based in reality, we find ways to deliver real information to children through storytelling and other similar methods. For example, when teaching children about the beginnings of our universe, Montessori schools use what is called a Great Lesson. The first Great Lesson is a dramatic story, told to children with the use of props, experiments, and dramatics (think: a black balloon filled with glitter is popped to illustrate the Big Bang, with bits of paper in a dish of water used while talking about particles gathering together). This lesson is fascinating for children in the way it is presented, but gives them basic information about the solar system, states of matter, and other important concepts.


Children in the second plane have a voracious appetite for information, and are often drawn strongly to what we in Montessori call the cultural subjects: science, history, and geography. While we support their rapid language and mathematical growth during this time, we are also responsible for providing them with a variety of rich cultural lessons and experiences.


It is important to note that children develop a sense of moral justice at this time. They are very concerned with what is fair, and creating the rules to a new game is often as important (if not more so) than playing the actual game itself.


This is the period of time in which children are striving for intellectual independence.


The Third Plane: 12-18


The third plane of development encompasses the adolescent years. During the second plane, children become aware of social connections, but in the third plane they are critical. During this time children rely heavily on their relationships with their peers. They feel a strong desire to remain independent from adults, although they are not quite ready to do this entirely. It is our job to find ways that allow them to experiment with independence while also providing a safe structure in which they may do so.


Children in the third plane tend to require more sleep, and they sleep later than when they were younger. They long for authentic learning experiences, and Dr. Montessori imagined just that. Her ideas of Erdkinder (children of the earth) led her to contemplate a school setting that would support children’s development during this time. She imagined a farm school, in which children would work to keep the farm operational, but also contribute to planning and decision making while doing so. 


During the third plane children are refining their moral compass while developing a stronger sense of responsibility.


The Fourth Plane: 18-24



The final plane is a time in which young adults are striving for financial independence. They are often living away from home for the first time, and use this time to figure out where they fit into their society. Many make choices to further their education and/or explore career paths.


It is during the fourth plane that people begin to develop a truer sense of who they are as individuals.


Each plane of development should be mindfully nurtured. If a child is able to experience one developmental phase in a rich and carefully prepared environment, they are ready to fully take on the next phase when it is time.

By Jasmine Parks May 23, 2025
Adolescents are in a new stage of development. So, how can the adults in their lives adapt? In Montessori adolescent programs, we open our hearts and minds to what is really happening for adolescents in their growth toward adulthood. We have enormous respect for adolescents and the growth that happens during this stage of life. In many ways, the early adolescent years are parallel to the first years of life. Adolescents are newly emerging adults. They are newborns, and just like newborns, they are gaining a great deal of learning, brain integration, and social/emotional equilibrium. Because what happens during adolescence impacts how our future adults will adapt and contribute to the broader society in adulthood, we are careful to model what it means to be an adult. We work to provide guidance and structure while respecting adolescents’ journey of self-construction. This stage of development is a period of reorganization, and we have the unique opportunity to positively influence and support this transformation. The Montessori Adolescent Environment Montessori adolescent programs vary in structure but typically include: ● Plans of study and work ● Different forms of social organization ● Micro-economy programs ● Work with nature and the land Within these activities, adults serve multiple roles in different settings, such as in the kitchen, through work on the land, in business operations, and more. However, it is essential to remember that the Montessori learning environment belongs to our adolescents. As such, we must ensure students develop concentration and independence through meaningful activities in an attractive and stimulating environment. Creating this prepared environment is a vital piece of the adult’s work! So we work to uphold the following characteristics. ● Designed for self-construction : Adolescents need an environment where their personal development takes priority over just producing a finished product. Whether running a microeconomy business or working on the land, we remember that the product isn’t the primary concern; rather, it’s the adolescent’s development and their self-construction. ● Developmentally appropriate : Activities and experiences should align with where adolescents are in their growth so as to ensure engagement and relevance. ● Supportive of human tendencies : We want the environment to support human tendencies, like orientation, order, association, and exploration, in a way that evolves with students’ age and maturity. This means the space and the work will look different based on what our students experienced during their elementary years! ● Includes materials/activities that provide appropriate challenges and opportunities for independence : Adolescents need access to tools, technology, creative outlets, and real-world applications of their learning, from garden tools to spreadsheets, from theatrical production materials to forms of publication. ● Provides Beauty and Order : While adolescents may not always maintain order, a well-organized and aesthetically pleasing environment still impacts their development and identity formation. Although adolescents experience organization as a convenience, order is necessary to operate in a microcosm of society and when you need to get things done, like cooking a meal for a group. ● Ensures Isolation of difficulty : We need to observe to know if our adolescents can use the tools at their disposal and also to plan for what lessons they need to be successful. Adolescents don’t want to be incompetent. They also don’t want to be ordered about by an adult. They need our side-by-side support. ● Is Scaled in Size : We want workspaces should be adaptable to accommodate the diverse physical and developmental needs of adolescents. Scaling still matters at this level because adolescents can be very different from each other in their development. ● Offers Limited materials : Too much choice can be overwhelming, yet the material needs to be obtainable when the task requires it. We intentionally ensure there isn’t one of everything for everyone because research shows adolescents are more productive when working with a partner. ● Encourages Care (of self, others, and the environment) : This is a beautiful thread in all of Montessori. As our young people approach adulthood, we support them in learning how to take of themselves so that they then have the capacity to take care of people around them and then their community and their planet. Encouraging adolescents to care for themselves, their community, and the world around them fosters responsibility and empathy. The Essential Role of the Adult Adults are an essential part of the prepared environment, acting as facilitators of human development. Our primary responsibilities include: ● Creating Conditions for Growth : Providing experiences that develop social responsibility, justice, and dignity. ● Modeling Respect and Civility : Demonstrating respect for people, living things, community spaces, and social norms. ● Fostering Engagement : Encouraging participation through invitations to work, short presentations, and meaningful activities. ● Encouraging Self-Construction : Allowing adolescents to take ownership of their learning while the adult remains in the background, blending into the work alongside them. The Power of Observation and Patience A fundamental role of the adult is to create conditions that naturally engage adolescents. This requires stepping back from unnecessary praise and criticism and allowing students to recognize their own successes and errors. Learning comes from experience, and we see mistakes as valuable opportunities for growth. Adults must also develop strong observation skills, practicing patience as adolescents navigate their developmental process. Our role is to guide, not dictate, allowing adolescents to take ownership of their education. Ultimately, we must be aware of and sensitive to adolescents' developmental needs and characteristics. We respect their potential and understand adolescents’ need to function in a social context and their drive to become independent young adults. Side-by-Side Work One of the most effective tools for fostering independence is working alongside adolescents. This allows them to: ● Observe real work in action ● Understand their role within a community ● Feel valued for their contributions The process begins with adults modeling tasks, ensuring students understand the necessary skills, tools, safety rules, and quality expectations. Gradually, responsibility shifts to the adolescent, allowing them to take ownership while we observe from a distance. Older students can take on leadership roles, further developing their skills and sense of responsibility. Preparation of the Adult The role of adults in a Montessori adolescent program is built on teamwork, respect, and humility. Adults must collaborate effectively, ensuring that the program serves the community of adolescents rather than personal agendas. By fostering a respectful and engaging learning environment, adults empower adolescents to become independent, confident, and socially responsible individuals. Facilitating adolescent development is a significant challenge requiring deep preparation. Montessori adults must be willing to evolve, accept change, and continually refine their approach based on observation and feedback. Montessori education is powerful for this age group because the adults are constantly exploring how to creatively meet adolescents’ needs, from designing the learning environment to preparing themselves to support these emerging young adults. Curious to learn more about how Montessori supports stages of development in our young people? Schedule a tour!
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