150 Years: The Observations that Drive the Work

Meagan Ledendecker • December 21, 2020
three images side by side: preschool child sweeping with dustpan and brush; elementary aged child reading a book; adolescent student sitting outside with lunch

This article is part of a series that we will share throughout the 2020-2021 school year to celebrate the 150th birthday of Dr. Maria Montessori. Check back often for more posts that reflect on the past, present, and future of Montessori education.

 

The entire foundation of Montessori education is built on a legacy of scientific observation. As you likely already know, Dr. Montessori began her career as a physician with absolutely no intention of working in the field of education. Her earliest work in a psychiatric clinic led her down the beginnings of a path that would guide her work for the rest of her life.

 

She watched, she noticed, and she reserved judgement. From that first clinic, to the various other placements in Rome, to the first Casa dei Bambini, and all the other schools she helped inspire and create throughout her lifetime, she observed. As a scientist, she knew the value of approaching her work without bias, and with intent to collect meaningful data.

 

Over the years, Montessori began to notice patterns. Just like any one of us, she acknowledged that it is impossible to expect all children to fit into the same parameters, but she realized that there are very distinct characteristics that children of different ages tend to display. Regardless of location, culture, or language, she noticed commonalities emerging, and she used this information to lay forth the planes of development.

 

The general idea is that learning and development is not linear, but rather flows in cycles.

diagram of the 4 planes of development

These planes of development are what guided the original groundwork for the various environments in Montessori schools. From the way we organize our classrooms to the way we present lessons, it’s important that everything we do is meeting the child exactly where they are. As Montessori guides, we use the planes as a guide while we plan, as well as how we approach children with their everyday work. We know that when families first learn about this information, it tends to resonate deeply as they recognize their own child and form a clearer vision for their child’s future.

 

The First Plane

Birth-6 years

“Help me do it myself.”

 

Montessori noted that there were distinct differences between the first and second half of the first plane. She called the child aged 0-3 the spiritual embryo. Humans, unlike other organisms, need a significant amount of time after they are born to become fully developed. During these first three years, children’s bodies and minds grow in ways that allow them freedom of movement, as well as critical language skills.

 

How can we support infants and toddlers?


  • Create an environment that encourages rolling, crawling, standing, and walking.
  • When a child is old enough to walk, we allow them to do so (even if this means we slow down to meet their pace).
  • When your infant babbles, mimic their sounds in a conversation format. This will help them learn how humans communicate.
  • As our children develop more sophisticated language skills, engage in regular conversation.
  • Read and sing songs together frequently.
  • Support their practical life work. This means finding ways for them to independently meet their self-care needs, such as eating, drinking, toileting, and dressing. Of course, they will need full support as infants, but you can gradually nurture their growing independence as time goes on.

 

Montessori referred to the child aged 3-6 as the conscious worker. Children of this stage want to become masters of their environment, and their play(work) becomes a critical part of their development. The skills they developed during the first three years of life are refined and applied to their continuing development. Children of this age begin to develop their personalities. The way we support them is really continued work:

 

  • Allow young children to be as independent as possible.
  • Find ways for them to engage meaningfully and authentically in ‘adult’ tasks, like household chores.
  • Create an environment that allows for independent dressing, snacking, etc.
  • Continue to read and sing together as they refine their language development.

 

To learn more about the first plane specifically, visit Aid to Life.

 

The Second Plane

6-12 years

“Help me to think for myself.”

 

The second plane of development is a time of abstract ideas, great imagination, a deep sense of justice and fairness, and a strong desire to socialize with peers. Children of this age have an enormous capacity to learn about their world and universe, and their curiosity to do so is boundless. One of our greatest tasks is to provide extensive learning opportunities in the cultural areas of study (science, history, and geography) in order to meet these needs. They begin to think outside of themselves and are curious about the world and their place in it. How might we support children during these years?

 

  • Understand their desire to be with their peers and build social opportunities into each day.
  • Acknowledge that social skills are still being developed, and children will need guidance when solving conflicts.
  • Utilize this social time to create structures in which children can learn to work together cooperatively.
  • Provide plenty of books and other sources of information about areas of interest.
  • Note that children in the second plane have lost the sense of order they once had when they were younger. While we still need to teach them responsibility and cleanliness, it is completely normal for them to pay less attention to these things and become messier than they once were.
  • The second plane is a period of physical growth in which children sometimes become temporarily unaware of where their limbs are. This can lead to periods of general clumsiness, bumping into furniture or people, knocking items over, etc. Just knowing this can be a helpful reminder that it will pass.
  • It is important that we remember the great strides and capabilities children have in the areas of math and language during this time as well, and that each child will move at their own individual pace in these subjects.We should continue reading with our children as long as they enjoy it (for many children this is into the early third plane) as we can model good reading while also dedicating time to connect with them.

 

To read more about the second plane, click here.

 

The Third Plane

12-18 years

“I can stand on my own.”

 

The third plane, in many ways, mirrors the first plane. True, adolescent children are much older and independent than young children, but they are on the cusp of transforming into adults. This is one of the greatest shifts during the course of a human life. While teens are going through big physical changes, they are simultaneously experiencing great internal changes. They have a deep drive to push away from their parents and become independent, yet they are not actually able to fully do so. These are important characteristics to keep in mind while we search for ways to support them.

 

  • Make yourself available. Even when it seems like your teen doesn’t want you around, they need to know you are there for them when they do.
  • Keep the lines of communication open. Your adolescent is able to discuss much more mature topics, and likely does with their friends. As adults, we can be the people they trust for facts, and we can teach them how to discern conflicting pieces of information on their own.
  • Encourage teens to follow their passions. This is a time in their lives when they will begin to discover their future paths. Our task is to support what they choose, even if that involves exploration of many options.
  • Support their emotional growth and changes. There will be times of upheaval, but there will also be times of great joy. They will need you there to listen.
  • Consider providing opportunities for teens to help out in their community. They will be searching for ways to connect and contribute, and they have the capacity to understand many of the struggles our society faces.
  • Allow adolescents to pursue authentic work whenever possible; this could be creating art, fixing old cars, getting a job or apprenticeship, or even starting a business. If a child is motivated and interested, we can guide them on their way.

 

What does this look like in Montessori schools? Click here to learn more.

 

The Fourth Plane

18-24 years

“I can achieve independently.”

 

As an adult, the early years are a time in which most of us develop a sense of purpose in a deeper sense than we had previously. We refine our goals, further develop our interests, and consider what we might do to contribute to our society. This often comes in the form of a career, but it can take on many other forms as well.

 

People in this stage are often working toward achieving financial independence - an increasingly challenging task in today’s economy. Luckily, young people are creative, and they find ways to meet their needs within the environment they find themselves in.

 

For more on what Dr. Montessori had to say on the planes of development, click here.

By Meagan Ledendecker February 23, 2026
One of the quieter, less visible practices in a Montessori elementary classroom is the Child-Guide conference. You may never see it listed on a schedule or mentioned in a weekly update, yet it plays a profound role in children’s experience at school. Relationship Comes First The primary purpose of these conferences is to establish, maintain, and strengthen the relationship between the adult and each child. This focus shifts the dynamic from a teacher looking for faults or scolding about unfinished work. Rather, it’s a collegial conversation that enables children to take an active and engaged role in their own education. These connective conversations are grounded in relationship-building because when children feel emotionally safe and genuinely respected, they are far more willing to reflect, stretch themselves, and take responsibility for their growth. Every Child, as Often as They Need Montessori Guides aim to meet regularly with every child, but what “regularly” looks like can vary based on individual needs. Some children benefit from a longer, more formal conference every few weeks. Others need brief, frequent check-ins, sometimes lasting only a minute or two. These short moments might look like a quick conversation at the beginning of the morning, a gentle pause beside a table, or a quiet walk across the room together. The length of the meeting is not what matters. What is important is the message it sends: “I see you. I know your work. I care about how this is going for you.” What Happens in a Child-Guide Conference? While conferences vary based on each individual and the moment, they often include: The child bringing their learning journal or work (finished and unfinished) The guide bringing observational records A shared look at what has been accomplished Gentle reflection on what still feels unfinished Planning for what might come next Scheduling new lessons or presentations Support with larger projects: breaking them into steps, mapping timelines, imagining the finished product This collaborative time also provides an opportunity to experiment with new strategies (“Would you like to try creating a prioritized list?”), celebrate successes (“You worked so hard on your presentation! How did it feel to share your work?”), and reflect upon challenges (“It seems like you’ve been feeling a bit stuck in your research project. Tell me more about what is going on.”). Learning to Define “Finished” One of the most freeing lessons children learn in Montessori is that not every piece of work must be finished to an adult’s standard. Sometimes children accomplish exactly what they set out to do, and continuing would add nothing meaningful. Other times, interest has naturally ended, and letting go is healthy. This is not about lowering expectations. It is about honoring children’s internal sense of completion and learning when to release what no longer serves a purpose. Trusting Children’s Self-Assessment A cornerstone of these conferences is trust. Guides listen carefully to how children assess their own work and articulate their goals. When an adult truly accepts children’s self-assessment, something powerful happens: children begin to see themselves as capable, thoughtful, and worthy of being taken seriously. Children often receive more from the tone and sentiment of these meetings than from the actual content discussed. The Whole Child Matters Because Montessori education is concerned with the whole child, conferences may naturally move beyond academics. A Guide might gently offer support with social dynamics or ask about recent struggles during outdoor time. These moments provide a safe space for children to reflect on their own social, emotional, and physical development, and to recognize that there is a network of support. When Relationships Need Repair Even in the most thoughtful classrooms, relationships can become strained. What matters is how adults respond. It is never too late for a Guide to sit with a child and say, honestly: “I’ve been thinking about how we’ve been interacting recently, and I’d love to brainstorm with you about what I could do differently.” When an adult takes responsibility, without demanding the child do the same, something shifts. Trust begins to rebuild. Real dialogue becomes possible. Children learn from this modeling. In time, after they feel safe, they often step forward to take responsibility themselves. What Children Are Really Learning Through these quiet, intentional meetings, children learn that:  their thoughts and feelings matter, adults can be trusted, mistakes are part of growth, reflection leads to independence, and relationships can be repaired. And while these conferences may happen quietly in a corner of the classroom, their impact echoes far beyond it. This is true preparation for life. To learn more about the long-term benefits of Montessori, visit us here in Lenox, MA!
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