The Planes of Development
January 2, 2023

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. 

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.

Montessori Materials Explained: The Fundamental Needs Charts
May 26, 2025
Through Fundamental Needs Charts, Montessori students discover how all people meet life’s essential needs, nurturing empathy and understanding.
Practical Life Has Purpose!
May 19, 2025
The Purposes of Practical Life in Montessori In a Montessori classroom, practical life activities play a foundational role in supporting children’s development, independence, and connection to their environment. Because children are actively absorbing and adapting to the world around them, everything we offer in practical life serves a developmental need. Supporting Independence One of the primary goals of practical life is to nurture children’s functional independence—the ability to care for oneself and the environment and interact meaningfully within a community. The first plane of development (0 to 6 years) is marked by a strong drive for independence, with children eager to do things for themselves. By the time a child enters the Children’s House (approximately ages 2.5 to 6), they have already made strides toward independence. However, they still require an environment that allows them to refine their skills. In the world, children generally encounter a number of obstacles to their independence: Household processes (e.g., cleaning dishes in the dishwasher) may be hidden or too complex. Tools are adult-sized and difficult for small hands to use. Movements happen too quickly for children to absorb (e.g., tying a shoe). The Montessori environment addresses these barriers by providing: Child-sized tools for daily activities, such as preparing food and caring for the classroom. A clear, ordered sequence of movements that children can observe and repeat. The freedom to practice skills at their own pace, allowing them to move from passive observers to active participants. Supporting the Sensitive Period for Movement We also recognize that young children are in a critical period for refining their control and coordination. So practical life activities are designed to help children refine their movements in purposeful ways, directing children’s attention and energy toward focused, intentional actions. Walking on the line of an ellipse develops balance and control. Pouring water from a basin to a bucket refines precision. Carrying a tray teaches careful, measured movements. One of the most challenging yet essential aspects of movement is control. It takes effort to stop pouring just before a cup overflows or use only a small drop of polish when shining an object. By engaging in these exercises, children strengthen their willpower and gradually master their own actions. Supporting the Sensitive Period for Order Children in the first plane of development have an innate need for external order, which is reflected in their surroundings and daily routines. Montessori environments support this in a variety of ways. We ensure that activities have a logical sequence of steps so as children learn new concepts, they can also rely on the sequencing. Materials are placed in a specific order on the shelves, moving left to right and top to bottom so children begin to internalize the same patterning we use for reading as they work through the easier and most concrete activities to the most challenging and abstract. Montessori activities are color-coded. For the youngest children this means that all of the items for something like window washing will have the same color which helps children keep the set together. As children get older the color-coding is designed to help them grasp concepts like place value in math or parts of speech in language. Once children internalize these structures, they gain confidence and independence, allowing them to complete tasks from start to finish without adult intervention. Assisting with Cultural Adaptation Practical life activities reflect real-world tasks that children observe in their daily lives. Children are naturally drawn to meaningful work—they want to help, imitate, and participate. For example, in Dr. Montessori’s early observations in San Lorenzo, she saw that children were fascinated by the gardener and the custodian, eagerly following and watching their work. Children see adults doing marvelous activities, and children want to learn the skills to participate! Through practical life activities, children engage in culturally relevant tasks that allow them to feel like valuable members of their community. Supporting Orientation Orientation is a fundamental human tendency—we all seek to understand our surroundings and how to function within them. Practical life exercises help children orient to the Montessori classroom by introducing essential routines. For example, we take the time to teach children things that might otherwise be taken for granted, such as: How to carry a chair properly. How to greet a friend. How to roll and unroll a work rug. How to ask for help. By taking time to demonstrate these tasks, we show respect for the child and provide the knowledge they need to act confidently in their space. Supporting the Development of Concentration Practical life activities serve as a gateway to deep concentration. The freedom to choose and repeat exercises allows children to follow their intrinsic motivation and work toward self-perfection. When children reach deep concentration, they experience: Joy and a sense of fulfillment. An increased connection to others. A natural reduction in undesirable behaviors. The ability to repeat an activity for as long as needed also supports children’s sensitive period for order and mastery. This is why practical life often serves as the first point of engagement for children in the Montessori classroom. Supporting the Development of the Will Practical life exercises help children develop willpower and self-control by bridging the gap between impulse and deliberate action. At first, children act on instinct, but through repeated exercises, they learn to: Act consciously and voluntarily. Perfect their actions through self-correction. Develop grace, courtesy, and social awareness. Whether through learning how to clean up a spill or preparing snack to share with others, children learn to control their impulses and consider the needs of others. Dr. Montessori beautifully summarized this transformation in The Discovery of the Child: “The grace and dignity of their behavior and the ease of their movements are the corollaries to what they have gained through their own patient and laborious efforts. In a word, they are ‘self-controlled,’ and to the extent that they are thus controlled, they are free from the control of others.” Practical life is far more than just pouring, scrubbing, and folding—it is the foundation for independence, concentration, order, and social development. These carefully designed activities help children orient to their world, refine their movements, and develop the willpower to act with purpose. By embracing practical life, we give children the tools to engage meaningfully with their environment, take ownership of their learning, and ultimately, become confident, self-sufficient individuals. Contact us to schedule a tour so you can see how young children use practical life activities in powerful ways!