The Planes of Development
January 12, 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. 

4 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.

Back to school checklist banner
By Elizabeth Anguamea August 6, 2026
As we head back to school, many children experience nerves around the unknown, whether it is new teachers, classrooms, academics, or friends. Often, the anticipation is the hardest part, and the best solution is to encourage communication, be present and simply listen. Refocusing on daily healthy habits will ensure the brain and body are getting the nutrients, sleep and activity they need. Returning to routines helps smooth this transition while cultivating organization, executive functioning, independence and self-care skills. Some children are more focused on friendships than academics, and there are many ways to support these social-emotional skills at home. Whether your child is 3 and going to school for the first time, or 12 and going into their full-cycle year in Upper Elementary, here are some ways to ease the transition from summer back to school! Return to Routine Prioritize sleep and reset bedtime. Eat nutritious, regular meals. Limit screen time before sleep. Schedule in daily physical activity and play to regulate the body and the mind. Take time to do a trial run before the first day. Build Independence Practice preparing lunch and opening/closing containers. Create a visual schedule or checklist for morning routines or daily tasks. Contribute to family life by participating in household chores. Prepare school supplies and ready backpack. Encourage kids to choose their own clothes and practice dressing themselves. Grow Social Confidence Schedule low-pressure playdates with friends. Practice how to introduce yourself to a new friend or ask to join a game. Model respectful problem solving and peaceful conflict resolution. Play games where kids can learn to lose and practice handling disappointment. Encourage self-advocacy and making their voice heard. Foster Emotional Readiness Name feelings openly, without trying to fix them or make it “better.” Let them know nerves about new teachers, classrooms and classmates are normal. Moderate anticipation by talking through what to expect. Remind them that they can always trust and confide in their teacher. Be present, create opportunities for them to open up, and simply listen. Cultivate rituals that work for your family Eat breakfast or dinner together as a family. Start a Friday family movie night. Create a special bedtime routine. Hold weekly family meetings. Schedule a weekly board game night.
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