Stages of Development Series: Childhood
Julie Douglas • March 10, 2025

Understanding human development at each stage is crucial to fostering optimal growth. This belief forms the foundation of Montessori education, which is deeply rooted in the developmental needs of children. 


This post is the second in a series that explores the four stages of human development: birth through age six, ages six to twelve, ages twelve to eighteen, and ages eighteen to twenty-four. Each of these stages, or planes of development, comes with unique needs and capacities, and understanding them allows us to better support children in their educational journey.


Childhood (Age Six to Twelve)


Unlike the dramatic changes seen in infancy and adolescence, the second plane of development (ages six to twelve) is often viewed as a period of relative stability. This phase serves as a critical time for children to build upon their early experiences while preparing for the transitions that will come in adolescence. Despite its importance, this period is sometimes overlooked in society, but it is essential for the development of social, intellectual, and emotional skills that will serve as a foundation for later life.


Key Characteristics of Elementary Children


At the core of this stage are several observable characteristics.


Physical Sturdiness and Stability

Children in this stage experience a steady period of physical growth. They lose their primary teeth and gain adult teeth. Their skin loses its baby softness. Their hair even gets coarser and darker. Their body becomes leaner and stronger, with the soft, rounded contours of early childhood giving way to a more defined physical form. Despite these changes, growth slows down compared to the rapid pace of the first plane. This time also brings greater stability in health and coordination.


Reasoning and Abstraction

While children in the first plane absorb information effortlessly and even unconsciously, the second plane is marked by a growing capacity for reason and abstraction. No longer content with simply absorbing facts, children seek to understand the underlying causes of things. They begin to ask “why” questions and develop the ability to think logically and critically about the world around them. Their imagination flourishes and they love being able to transcend time and space, mentally traveling through history or exploring possible futures.


Conquest of Independence

This is a time when children transition from sensorimotor learning to becoming intellectual explorers. The intellectual independence they gain during this phase fuels their studies of mathematics, history, geography, art, and music. Montessori classrooms provide opportunities for children to explore these subjects with the motto: “Don’t tell me. I’ll figure it out myself.” Their journey toward independence extends beyond the academic to include a growing capacity for social reasoning and moral judgment.


The Herd Instinct and Socialization

One of the defining features of children in the second plane is their social nature. Children at this age exhibit a strong "herd instinct"—the need to belong to a group and collaborate with peers. They begin forming micro-societies and creating their own rules, roles, and expectations. These experiences allow them to practice social interactions and develop their conscience. It’s worth noting that as adult-directed activities (e.g. afterschool sports and classes) increase, children have fewer opportunities to work out social dynamics independently.


Moral Development and a Sense of Fairness

As elementary-age children seek independence, they also begin to develop a sense of morality. Children at this stage are sensitive to fairness and justice, and are likely to voice concerns when they perceive inconsistencies. This is when we frequently hear, “It’s not fair!” This stage is about the exploration of right and wrong and the ability to question rules and authority. The drama that unfolds in the classroom is often part of this process, as children navigate the complexities of social rules and develop their moral code.


A Fascination with the Extraordinary

Second plane children are drawn to the extraordinary, whether in the form of superheroes, mythical creatures, or fascinating civilizations. Their imagination is sparked by the idea of powers beyond the ordinary, and they are eager to explore cultures and histories that seem larger than life. This fascination with the exceptional provides them an avenue for exploring concepts of heroism, strength, and the human condition.


A Supportive, Community-Based Learning Environment


In a Montessori classroom, children are encouraged to work both independently and in groups. As such, the prepared environment of the second plane is designed to foster collaboration while allowing space for individual exploration. Group activities allow children to develop their social skills, negotiate rules, and practice taking on different roles within a community. Through these experiences, they are able to form their own moral code and develop their identity in relation to the group.


Children in this stage also have a thirst for knowledge that goes beyond what is available in the classroom. Montessori education encourages “Going Out” experiences—trips beyond the school to explore the wider world. These excursions allow children to engage with real-world problems, develop planning and execution skills, and build a deeper understanding of the subjects they are studying. Through these experiences, children come to see themselves as active participants in the world around them.


Montessori referred to the educational experience in the second plane as "cosmic education." In this phase, children are introduced to the universe as a whole, with an emphasis on the interconnectedness of all life. The Montessori curriculum for this stage revolves around the Five Great Lessons, which invite children into discovering more about the universe, the formation of the earth, the coming of plants and animals, the arrival of humans, and the development of written language and numbers. From these lessons, all areas of study—botany, geography, history, zoology, language, and more—emerge, inspiring awe and gratitude for the universe and humankind’s place within it.


Support from Home and Community


While second plane children are eager to explore beyond the family and classroom, they still require the strong support of their home, school, and peer group. Social activities become increasingly important, as group work provides them with the opportunity to practice collaboration, moral judgment, and self-expression. A strong, supportive environment—both at home and at school—helps children navigate this important stage in their development.


Curious to see how a school environment can meet the needs of six- to twelve-year-olds while inspiring deep learning? Schedule a tour of our classrooms!


Geometry From the Start
September 15, 2025
Find out how children in Montessori environments development knowledge of Geometry.
Separation Anxiety: Why It’s Normal and What You Can Do
By Julie Douglas September 8, 2025
Every fall, the doorways of classrooms become a place of transition. Children are often excited to skip into their school environment, eager to learn and play. Unfortunately, many children experience some level of separation anxiety, particularly when they are very young. The good news? This is totally normal! Read on to learn more about why, and what you can do to help your child feel good about the time you spend apart. What does it look like? Separation anxiety is completely normal. Most young children experience it at some point, and although it can cause stress for both the child and their parents, it’s actually a healthy part of development, especially during the toddler years. Separation anxiety can manifest in many forms. Parents might see their child display some of all of the following behaviors: Crying Physically clinging to parent Loud protesting Persistent worry when separated from parent(s) Separation anxiety typically doesn’t last very long for most children and resolves itself within a few weeks. Once toddlers begin to realize that their parents will actually return, their fears tend to alleviate. Even older children can experience short-lived bouts of separation anxiety. These times are often even harder for parents, but it’s all perfectly normal! Why does it happen? There are a variety of reasons children may experience separation anxiety, but as we mentioned above, it most often occurs during the toddler years. Any time from about 7 months of age through 2-3 years of age, children may go through a phase during which separating from their parents can be quite upsetting. For infants, it’s about differentiating between strangers and people they know. This is obviously an important and healthy part of their development, although it can be heart wrenching when dropping your little one off with care givers in the morning before you head to work. As children get a little older, the reasons shift toward a fear that the parent may leave and not return. After a period of time, the child learns to trust that the separation is temporary, and the anxious behaviors subside. There are plenty of other reasons why a child may experience separation anxiety. If they are tired, not feeling well, or are experiencing stress or a period of transition in their life, they may feel the need to be closely attached to their parent(s). These feelings are typically short-lived and resolve themselves once the child feels some level of reassurance or once the underlying cause is no longer an issue. What can we do? Each child is different, but the following are some strategies that tend to work well for most families: Set aside some extra time in the morning. The simple act of not rushing can create a sense of calm for both you and your child, but it also leaves a few extra minutes for some cuddles. Create a routine. When your child knows what to expect, they will feel more able to trust that everything is okay. This may mean singing a special song in the car on the way to school, walking to the front door together, and making sure to squeeze in one last hug. Find whatever routine works for you and for your child. Be consistent. Once you’ve established a routine, stick to it. This can be a challenge, but it is so important and will do so much to help a child who is feeling anxious. Of course, life has a way of interrupting our plans and routines (especially when you’re trying to get out the door with a young child!) but try to be as consistent as possible. Don’t linger, but don’t sneak away. Staying too long can intensify feelings of anxiety when you do leave, and leaving without your child’s knowledge isn’t the greatest idea, either. They may experience feelings of worry or sadness, but they will also be more likely to trust if they know when a parent is leaving. Ask your child’s teacher or caregiver for advice. Chances are, they have had lots of experience with separation anxiety in children. Teachers are often masters of distraction and redirection, which can help you make a peaceful exit. What if it’s more? Once in a while, separation anxiety is more than a phase. Again, your child’s teacher is a good person to consult if you’re concerned. If your child is well past their toddler years, if their anxiety is affecting them in multiple parts of their lives, or if behaviors are stretching past weeks and into months, it can sometimes help to talk to your child’s pediatrician. Separation anxiety disorder is a more severe and persistent version of what most children experience. The good news is, even children who experience SAD have options to help them overcome their fears and work toward healthy, trusting, and confident periods of separations from their parents. Want to learn more? Check out this fantastic article for helpful tips.