Physical development in childhood is as important as cognitive, language and socio-emotional development. Gaining knowledge on physical development is crucial because it provide educators and parents the information needed to know what to expect in terms of physical development as children grow and develop. Knowing the most important physical milestones that children typically go through provide parents and educators with the tools to better cater to children’s needs and help the develop and thrive the best way possible.

Physical Growth in Childhood
Infancy (Birth through age 2): rapid period of growth in which infants rely greatly on reflexes to grow and develop (breathing, for instance, is a reflex as well as grasping). Between the age of 12-18 months onwards, infants become capable of holding their heads up, roll over, reach for objects, sit and crawl. In the second year of life, they become more confident when walking and learn to manipulate objects with their hands. It is important to notice that motor skills emerge in a cephalocaudal trend, which means that first children gain control of their heads and then the rest of the body and the Proximodistal trend, which means that movement starts from the trunk to the limbs – infants first learn to control their arms, then their hands and finally their fingers. Consider that at this age children do not use language to communicate, which means that parents and educators should pay close attention to the child’s needs, sleeping and eating patterns.
What we observe:
• Reflexes
• Rapid growth and weight gain
• Growing ability to move around
• Increased self-help skills such as feeding
• Gain understanding about their environment through their senses
• Oral phase where everything goes into the mouth
• Cephalocaudal and Proximodistal trends of development
What can we do to promote healthy physical development?
• Allow time for “tummy time” so infants gain strength to be able to execute other crucial movements such as crawling
• Encourage movement such as crawling and walking
• Use sensory stimulation such as singing, clapping, sensory toys that can go in the mouth to help the child explore their own body and the world around her

Early Childhood (Ages 2 through 6): big changes occur in gross motor development (think big muscles moving – walking, running, climbing, etc.) and fine motor development (think small muscles moving – writing, cutting, gluing) during this age period. Children become coordinated enough to ride tricycles and throwing and catching ball. At this age they love to play and use their body to navigate their world. In fine motor skills, they learn to dress and undress themselves, hold pencils, write, play with blocks and puzzles, etc. Play, for instance, is extremely crucial for children at this age because through playing (pretend play, manipulating objects, playing outside) children learn about their bodies and to navigate the world around them.
What we observe:
• Loss of “baby appearance”
• Lots of energy to practice gross motor skills such as running, jumping, skipping, riding tricycle and scooters
• Naps start to not occur anymore, which may cause fussiness
• Rudimentary pencil grip
• Lots of pretend play
What can we do to promote healthy physical development?
• Provide ample amount of time for outdoor play
• Give ample opportunity for pretend play/role play
• Incorporate intense physical exercise as well as rest and quit time
• Provide children with puzzles, building blocks and arts and craft to help them develop fine motor skills

Middle Childhood (Ages 6 through 10): during this period, children demonstrate slow but steady growth in terms of weight and height and during this period children also lose their first set of teeth to have them replaced by permanent ones. At this age children still appreciate movement very much and movements that once looked jerky or awkward now become smooth. They gain appreciation for sports because now they can play better due to the improvement of motor skills. Additionally, at this age children start to get better at drawing, their writing becomes more legible and they also take new more complex activities such as sewing due to advances in fine motor skills that come during this period. An important fact about this age group is that during this time children become more sensitive about their appearance, which is connected to their self-esteem and many times their sense of worth. It is important for parents and educators to be aware of that because this sensitivity may alter behavior.
What we observe:
• Steady gains in weight and height
• Loss and replacement of teeth
• Participation in organized sports
• Handwriting and drawing (fine motor skills) get better
• Take on more challenging fine motor activities such as sewing and more advanced arts and crafts such as scrapbooks
• Gross motor skills such as running become more coordinated
• Start to become more aware and self-conscious about physical appearance
What can we do to promote healthy physical development?
• Incorporate physical movement in some academic activities
• Allow for frequent breaks where children get to move
• Provide daily and frequent opportunities for play
• Encourage children to participate in sports
• Encourage activities that help children refine their fine motor skills but don’t penalize children that have fine motor skill delays

Early Adolescence (Ages 10 through 14): this period comes with great changes such as puberty which comes accompanied by a growth spurt, hormonal change and gains in weight and height. For girls, the menarche (first menstruation) can be the cause of a great amount stress (or in many cases also excitement), boys also go through a great amount of changes such as the spermarche (first ejaculation) and lots of body changes like girls. This period of their life can be very distressing due to all of the physical changes that they go through, which means that is crucial for educators and parents to alert adolescents about the physiological changes that they will or are going through to try and reduce stress.
What we observe:
• Periods of rapid growth
• Beginning of puberty
• Self-consciousness about physical behavior
• Some risk-taking behavior due to the sudden hormonal change/imbalance
What can we do to promote healthy physical development?
• Be a good role model for healthy eating and physical activity
• Talk to them about the physical changes that they are going through
• Encourage productive use of their time
• Teach and talk about physical harassment and bullying

Other important information to consider…
Eating habits
The food that one eats influences the way he/she grows and develops because the nutrients we need to keep our body functioning are found in food. If we don’t feed our bodies the right types of food, it won’t work efficiently. For children, this applies even more because as they grow into adults, they need enough nutrients to ensure they have the important nutrients to nourish their bodies in order for them to grow and develop healthfully. It is important for educators and parents to understand that the foods we feed our children and students is directly linked to how they grow and develop. If children only eat junk food, they are probably not getting the important nutrients that promote growth and development and also are at a high risk of becoming overweight, which in turn means children can be introduced to a vast array of diseases that come with weight gain. Most of the time is not easy to get children to eat what is healthy for them, however, if we serve as good role models it may become easier. We have more control over what young children eat, however, once they get older it is harder to control what they eat, so a combination of good role modeling from us as well as educational instruction on what is healthy and what is not healthy to eat should be helpful. In schools, educators can add healthy eating habits to their curriculum and at home parents can have healthy foods available for children to eat. In case of poverty, it is crucial that schools have a healthy eating program for children to get at least one healthy meal a day if possible.

Physical Activity
Children were not made to remain still and quiet all the time. They need to move and run around in order to develop their physical domains. We need to encourage movement and physical activity if we want children that learn in school and are academically successful because if they have their physical activity needs suppressed, they aren’t able to focus, which in turn causes low academic achievement. As parents and educators, we need to provide children with ample opportunities for physical activity and incorporate physical activity on children’s day to day activities. Young children love to move around, run, jump, skip, climb, etc. and older children like to participate in sports, so we should encourage them to do so in order to contribute to their physical development and consequently their cognitive development as well.

Rest and Sleep
Many times, we oversee the importance of rest and sleep in child development, which is dangerous. If children and adolescents don’t sleep and rest enough, it compromises their development because for instance, it’s during sleep that major physiological tasks the body needs to go through occur. If children don’t rest and sleep enough, their bodies don’t develop appropriately. As a rules of thumb, infants and toddlers must take naps during the day, young children should have quiet time during the day to recharge their batteries and adolescents should be getting enough sleep in order to accomplish their daily school tasks.

Source: Child Development and Education by Teresa M. McDevitt, Jeanne Ellis Ormrod – Prentice Hall, 6th edition, 2010