The Planes of Development
Nido Marketing • December 7, 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. 

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 Elizabeth Horgan, PhD May 20, 2025
The Power of Routine for Young Children–Order, Predictability, and Independence
By Elizabeth Horgan, PhD May 8, 2025
It’s no secret that little ones often have intensely big feelings. We’ve all witnessed an emotional outburst common during the “terrible twos” and “threenager” years. Watching your toddler melt into a puddle of sobs can be incredibly frustrating if you don’t understand the root cause. Luckily, there are some clear explanations for what is happening in your child’s brain and concrete strategies you can use to help children learn to regulate their emotions. While they may seem dramatic, young children’s emotional storms are not a sign of bad behavior. These outbursts express an overwhelmed nervous system and a plea for connection. They are not giving you a hard time, they are having a hard time. Children are not born with the ability to recognize, express, manage, and respond to their emotions. It is entirely learned. As toddlers begin to experience and express bigger feelings, they still lack the impulse control to manage these emotions. Through a strategy called co-regulation , you can help your child both find their calm in the moment and develop their emotional regulation skills for future success. Co-regulation is when a calm and responsive adult provides the necessary emotional support to help a dysregulated child work through their big feelings. While children are in the first plane of development (ages 0-6), they are constructing their emotional world but can’t yet handle big feelings on their own. Through co-regulation, adults can offer a compassionate presence to help children understand their emotions and feel safe when overwhelming feelings threaten to take over. Co-regulation teaches children the skills for emotional regulation through presence and modeling by using a soothing voice, gentle touch, and eye contact to show a child that they are not alone. The way we respond to children’s emotional needs creates a framework for learning to regulate their feelings. Your calm and regulated emotions are the determining factor for your child’s healthy emotional development . Children borrow their sense of calm and safety from the adults around them. Keeping your cool can feel much easier said than done during a wild toddler tantrum. But to teach children to regulate their emotions, we must first be able to regulate our own . Children are not responsible for the emotions of adults. While children’s behavior may feel triggering, it is the adult's responsibility to regulate their feelings about and reactions to the situation . Children need reliably calm caregivers who can help guide them through their feelings. The goal here is to reinforce your boundaries while supporting your child through the big emotions. Being emotionally supportive differs from “giving in” to a child’s tantrum. You set the rules, which do not change based on the child’s emotional reactions. In fact, changing the boundary or rule in response to your child’s big feelings may serve to increase their tantrums while decreasing their ability to regulate emotions. Tantrums are a chance to help your child regulate and connect with them. When a child is in a large emotional outburst, they are not cognitively capable of understanding reason and logic. Instead, they need a reassuring adult presence to teach them how to work through their big emotions and get to the root of the problem. Only after the emotions pass can a child start to understand explanations and corrections. This does not mean you need to permit your child to behave in unacceptable ways. It does mean that you need to help them calm their big emotions BEFORE you can move to correction and redirection based on your boundaries. The reason co-regulation is successful is largely due to mirror neurons , which are special brain cells that activate not only when we do something, but also when we see someone else do it. Think about the way a baby smiles back when you smile at them. This is an example of mirror neurons at work. Similarly, if an upset child sees an adult remaining calm in the face of a challenging situation, it activates their sense of calm. Thanks to mirror neurons, children can literally borrow their calm, both physically and emotionally, from adults. Through co-regulation, a calm adult can offer emotional support through kind words, a gentle tone of voice, and peaceful touch. Once the child begins to settle down, an adult can help the child name and explain their feelings and model healthy ways to manage the big emotions. Through many small, supportive moments of a calm adult in the face of big feelings, your child’s brain begins to self-regulate to manage their own emotions. When you meet a child’s emotional outbursts with calm, steady compassion, you provide the training necessary to rewire their brain to regulate the flood of emotions and find balance. Practical Tips for Practicing Co-Regulation: Find and Share Your Calm– Effective co-regulation is only possible if you regulate your emotions first. Your calm is the determining factor for success. But keep in mind that you aren’t failing if you regularly feel frustrated by your child’s outbursts! Take a second to settle your own nervous system before trying to help your child regulate. Try strategies like box breathing (inhale 4 seconds, hold 4 seconds, exhale 4 seconds), loosening your muscles, or repeating a calming phrase to yourself can help you center yourself. Get on Their Level- Physically lower yourself to your child’s eye level. By meeting them where they are, both physically and emotionally, you can help calm their nervous system. You can even give a simple verbal reassurance such as “I’m here with you”. Name the Feeling —Teach your children about the different emotions and how they feel by identifying what you think they are going through. For example, you could say “You’re feeling sad right now about leaving the park”, “You’re really frustrated that you can’t get that tool to work”, or “It’s okay to feel mad”. It’s important to name the feeling without judging it, using simple language that helps them understand how they feel. Connecting BEFORE Correcting– Meet the child at their emotional place, and empathetically acknowledge their feelings before offering any necessary correction for their behavior. They need to be out of the emotional storm before they can truly understand the correction. Try lovingly reinforcing your boundary while still offering connection, by saying something like “I can see that you’re really upset, but I won’t let you throw toys at me. I’ll sit here with you until you feel better”. Focus on Nonverbal Soothing– Offer open body language, soft tone of voice, eye contact, and gentle touch to help settle the child’s nervous system. Model Calming Strategies– When you’re feeling upset, use it as an opportunity to model your own process of calming yourself down when you feel big emotions or triggers. For example, “I’m feeling so frustrated right now, but I’m going to take some deep breaths to help calm my body down before deciding what to do.”