Power & Potential: The Sensitive Periods

December 12, 2022

Have you ever noticed how sensitive young children can be to changes in routine? Even the slightest schedule adjustment can throw things off. On the positive side, young children also have an incredible ability to internalize the order of their daily activities. They intuitively know when something is supposed to happen during a regular day.


It’s also pretty amazing how quickly young children absorb the intricacies of language, how they progress so seamlessly from sitting to crawling to walking to running, or how they can be so focused on tiny details and objects. 


During these times in their lives, children seem to be compelled by an irresistible force. Think of the little one who wants to climb up the steps again and again. We can try to stop them, but they are undeterred! And despite the great effort involved, the activity almost seems effortless to them. 


In Montessori, we pay close attention to these periods of time when children show intense focus on mastering a new skill, creating deep understanding, or refining their abilities. We call these times “sensitive periods.” 


What are Sensitive Periods?


To paint the picture of sensitive periods, Dr. Maria Montessori used the example of newly hatched caterpillars. These young caterpillars hatch from eggs in protected nooks but are drawn toward the light where they can eat soft, young leaves at the ends of branches. The young caterpillars aren’t aware of the fact that going toward light will provide them with a food source. Rather, they are responding to a biological impetus. Once that need is satisfied, the caterpillars no longer have the desire to move toward bright light. That sensitive period is over and they shift into the next stage of their development.


Like the young caterpillars, young children in a sensitive period become incredibly absorbed with acquiring or mastering a new skill and hone in on the activity that aids their development. Neurologically, this is the time when groups of neurons become more active than others and establish key neural networks in children’s developing brains. These windows of opportunity are transitory and marked by children’s passionate focus on mastering a skill or characteristic. 


In Montessori we focus on four main sensitive periods:


  • Order
  • Language
  • Refinement of the Senses
  • Movement


Sensitive Period for Order


The sensitive period for order is most intense from birth to three years of age, although it does continue through age six. When children are under the influence of the sensitive period for order, we see their intense interest in the order of things, both in routines (time, order of events in day, etc.) and in their environment. Young children can show great distress if this order changes. 


As adults, we can appreciate that order makes our lives easier; planning our meals and picking out clothes ahead of time makes our week flow more smoothly. Organization and order are a convenience and make us more efficient. But young children need orderly environments in a different way. The order in their surroundings or routines becomes the basis for their relationship with the world. If that foundation of order is changing all the time, it’s like trying to build a house on a shifting foundation. Lots of changes in the environment or schedule cause children to have to constantly adapt, which diverts their energy away from other necessary forms of their development. When children have a predictable and ordered environment, they feel secure, trust their environment, and establish an internal order.


Sensitive Period for Language


Children are effortlessly absorbing language from birth. The first three years of life are focused on the development of spoken language and the last three years are focused on the expansion and refinement of language, including writing and reading. During this sensitive period, children are learning the intricacies of the language spoken around them. They hear sounds and begin to try to imitate them. They hear the rhythm of phrases and sentences. They begin to internalize the nuances of grammar. 


Because children are absorbing all aspects of language, they need rich language experiences. Thus, we want to provide lots and lots of vocabulary by naming real things in the environment and engaging in meaningful conversation, even with our infants!


Sensitive Period for Refinement of the Senses


Young children are learning about their world through sensory experiences. The sensitive period for refinement of sensory perceptions starts at birth and begins to fade around four and a half.


This sensitive period does not make children’s eyes see better, ears hear better, or tongue taste better, but it does help children distinguish between finer and finer differences. Children who have access to sensorially rich environments can begin to refine their senses, have clearer perceptions, and be able to organize and classify their impressions. Neurologically, this sensitive period is when children are creating neural networks that help them interpret their environment through visual, auditory, olfactory, gustatory, and tactile perceptions. An enriched experience gives children the opportunity to develop powers of sensory discrimination, like perfect pitch, that will last throughout a lifetime.


Sensitive Period for Movement


Movement is how children come into contact with their environment, express their developing personality, and develop their independence. So much movement development happens from birth, and then, from about ages two and a half to four, children focus on refining their movements.


Children in this sensitive period benefit from having their movements directed toward some purposeful aim. For example, children want to imitate and participate in daily life, like cooking and preparing food. As parents, we often give our children play kitchens. With no other options, children will play with the pretend kitchen for a while, but this doesn’t satisfy them for long. They are much happier preparing real food for themselves and those around them. Meaningful activity, like food preparation, helps children refine their movement, adapt to their culture, and contribute to their community in a purposeful way. 


Power & Potential


Although “sensitive periods” refer to the particular times when children are most open to developing a particular skill or trait, the name is a profound reminder. We need to be sensitive–treading mindfully and with great care–to the power and potential of these periods of development. 


During the sensitive periods, children develop the skills and characteristics of order, language, refinement of the senses, and development and refinement of movement without apparent effort. Once the sensitive periods have faded, children can still achieve and develop certain characteristics, but they have to do so using work and effort. Plus, the skill or characteristic isn’t as fully integrated and absorbed. Think about how hard it is to learn a second language as an adult! 


Most delightfully, when children are in a sensitive period and their needs are met, they experience deep inner joy and a sense of satisfaction. We invite you to schedule a tour so you can come visit our school and see this joy and satisfaction in action! 

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Have you ever watched a child trace the outline of a window with their finger, or carefully line up blocks into a perfectly symmetrical row? They may not have a name for what they're doing, but they are already exploring geometry. Dr. Maria Montessori understood that geometry is not an abstract school subject. It is part of the world children live in from the very beginning. A glance at the typical geometry textbook might suggest otherwise. Formulas, diagrams, and definitions can feel remote and lifeless, something to be memorized and forgotten. But look around for a moment. There is geometry in the angles of a mineral crystal and in the symmetry of a butterfly's wings. There is geometry in the legs of a chair and in the steel girders of a bridge. Children encounter it everywhere! In fact, research suggests that a basic intuitive understanding of geometric concepts may be inborn in human beings. A fascinating study of the Munduruku (an indigenous group living in the Amazon whose language includes very few spatial or geometric terms) found that both adults and children demonstrated an intuitive grasp of basic geometric ideas. This isn't something they were taught. It was already there. Montessori classrooms build on exactly this kind of inborn understanding. From Sensory Experience to Big Ideas In the early childhood years, children work with geometry through their hands. Materials like the Constructive Triangles, the Metal Insets, and the geometric cabinet give children a felt, physical understanding of shape, symmetry, and form before we introduce any formal terminology. Children gather and store these impressions. Their minds are being prepared. As they get older and certainly in the elementary years, children are ready to bring names and reasons to what they already sense. Elementary-aged children don't just want to know what something is called. They also want to know why. Why is this shape called a pentagon? (Spoiler: Its name comes from the Greek word for five: pente.) Geometry becomes a doorway into the history of language, ancient Greece, and the lives of mathematicians like Thales, Pythagoras, and Euclid, who puzzled over the same ideas thousands of years ago. This is the spirit of Cosmic Education when we pull one thread of curiosity to find it unravels into history, language, culture, and mathematics! Geometry, Algebra, and Arithmetic Woven Together One of the things that makes Montessori's approach to geometry so distinctive is that it doesn't stand alone. In the Montessori classroom, geometry is part of a three-part approach to mathematics, interwoven with arithmetic and algebra in ways that make each of them easier to understand. The Binomial Square is a good example. It presents the algebraic expression of (a + b)² = a² + 2ab + b² as a geometric pattern of squares and rectangles that children can actually build and hold. The arithmetic follows the pattern. The pattern confirms the algebra. Each one reinforces the others, and the whole thing is far more memorable than just a formula written on a board. Open-Ended, Creative, and Genuinely Fun Plus, a lot of Montessori geometry work has no single correct answer. We invite children working with the Metal Insets or Constructive Triangles to find as many equivalent figures as they can for a given shape. There may be dozens of ways to approach the same problem. This open-endedness nurtures the creative, analytical thinking that elementary children are hungry for. Plus, this quality of thinking will serve them in every area of life. Compass-and-straightedge constructions are another example. These beautiful, precise drawings challenge children in a way that is both mathematical and artistic. Many children find them deeply satisfying. What This Looks Like at Home You don't have to wait for the classroom to feed your child's geometric curiosity. Point out the shapes in a honeycomb. Notice the angles in a spider's web. Talk about the tiles on the floor or the panes in a window. Ask your child questions. Do you think that could be a triangle? How many sides does it have? These small moments of noticing are the same thing Montessori described when she wrote about preparing the environment to reflect the world children already live in. Geometry is already there. We're simply helping children see it. Come visit us in LakeCreek Montessori School to see how this unfolds in the classroom and to watch children fall in love with one of humanity's oldest ways of understanding the world.

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