THE PLANES OF DEVELOPMENT
August 23, 2024

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. 

The 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.

October 27, 2025
Since the pandemic, we can find ourselves carrying new or heightened worries about our children’s social lives. We can have concerns about whether our children “lost time” with peers during critical developmental years. Or maybe it’s worry about shyness, reluctance in groups, or how screen time may have replaced face-to-face play. Even now, long after schools and activities have reopened, it’s common for anxiety to surface: Is my child making enough friends? Are they socially behind? Why We Feel This Way The truth is, these concerns are natural. COVID disrupted our social connections, and children being with other children is an important part of childhood. For months (and for some even years), daily opportunities to share space, work through conflict, and experience the joy of play were limited. Add in the reality of increased screen use, the culture of comparison amplified by social media, and children who may show hesitations around groups, and it’s easy to see why we are carrying this extra layer of worry. What Montessori Reminds Us Montessori provides us with a helpful perspective: growth is not lost, it is simply unfolding in its own time. Children are incredibly resilient. Social development isn’t a race, and there isn’t one perfect timeline. Just as each child learns to walk or read at their own pace, children find their own paths into friendships and community life. How We Can Support Children (and Ourselves) So, what can we do to ease our own (and our children’s) anxiety while supporting their social growth? First, remember that depth of connection matters more than numbers. A child with one or two genuine friendships has a strong foundation. In Montessori classrooms, we often see that meaningful, sustained interactions carry more value than a large peer group. Second, provide opportunities for natural interaction rather than overscheduling. Time at the park, family gatherings, or small playdates often offer more authentic growth than tightly managed activities. In the classroom, children practice collaboration daily, from sharing materials to working on group projects. Third, support independence. After COVID, it’s natural to want to step in quickly if our child seems uncomfortable socially. But small moments of trust—like letting our children introduce themselves, ask to join a game, or resolve a conflict—help them build confidence and resilience. Finally, model calm and social grace. Children absorb how we approach social situations. When they see adults showing openness and curiosity, they are more likely to approach peers with the same ease. Partnering with Teachers Your child’s teacher is also a valuable partner. Montessori guides closely observe children’s social interactions and can offer concrete reassurance: “I noticed your child inviting a friend to join her work,” or “He showed patience while sharing materials today.” These insights often show growth that may not be as apparent outside the classroom. Supporting Social Growth at Home Simple, practical activities in our children’s lives can make a big difference. Hosting a “work together” playdate, for instance, shifts the focus from entertainment to shared purpose. Children might bake bread, build with blocks, or create art together. These collaborative activities naturally encourage conversation, cooperation, and problem-solving, giving children structured opportunities to navigate relationships. Practicing grace and courtesy at home also builds confidence. Small role-plays, like how to join a game or politely declining an invitation, help children learn the social scripts they need. Learning how to insert themselves into play: “What are you playing? I’ll join too!” or “No, thank you. I’d like to work alone right now,” are examples that may seem small but make a significant difference when children encounter peers in real settings. Family game nights are another excellent tool. Cooperative board games, memory games, or card games teach turn-taking, handling winning and losing, and joyful connection. Games provide low-stakes opportunities to practice critical social skills like patience, negotiation, and flexibility. Finally, spending time in community spaces offers invaluable real-world practice. Visits to the library, farmers’ market, or nature center allow children to engage in everyday interactions, such as greeting a librarian, asking a vendor a question, or navigating shared space with peers. These experiences help children build confidence and fluency in social settings. Moving Forward with Confidence It’s understandable to feel anxious about our child’s social life after such a collective disruption. But rest assured: children are not permanently “behind.” With trust, time, and supportive environments, children continue developing the skills of friendship, collaboration, and community. Montessori reminds us that growth is steady and ongoing. Our role is to provide the space, opportunity, and confidence children need to thrive socially. When we step back and trust the process, we discover that children are, in fact, developing social competence. Come schedule a tour of our classroom environments in Oak Park, IL to see how Montessori fosters a lasting sense of confidence and a deep form of belonging.
Human Tendencies: Why Montessori Still Feels So Relevant
October 6, 2025
From curiosity to self-control, Montessori aligns with the human tendencies that help children grow, adapt, and flourish.