Stages of Human Development Brochure.

1. The age of 18/12 is when you are an adult. When you’re
an adult, you get married, you have children, you have a
job, and you get your driving license. Weight: When you
are an adult your weight would be approximately 120lb
and above. Height: Your height would depend on your
weight so if you are large you are short and if you are
slimyou would be tall. Bones: Adults have 206 bones.
Teeth: Adults have 32 strong teeth. Brain: The brain of
an adult weighs 1300 grams (3 lb). Muscles: Adults have
their muscular coordination, they are able to walk, run,
crawl, jump, hop, etc. They also have enough strength.
Food: Adults eat everything. They have strong enough
teeth to eat things that are hard, too. Illnesses: Adults
get sick often because they are old. They get cancer,
diseases and other illnesses. Most adults do not get
febrile seizures.
The age of 0-18 months is when you’re an infant.
Weight: An infant’s weight would be
approximately 3.4 kg (71/2 lb). A normal baby
would double his/her weight in 6 months and
triple it in 1 year. Height: When you are a baby,
your height would be about 18-22 inches. Bones:
An infant has more than 300 bones that grow
strong in 1 year. Teeth: An infant has 20 teeth
which grow when the baby is 18 months -1 year
old. Brain: When the baby is almost 3 years old,
the brain will have 75% of an adult’s weight.
Muscles: A baby would start using his/her
muscular coordination by the age of 18 months.
Vocabulary: A baby will start saying simple words
when he/she is 9 months and he/she would reach
up to 250 words when he/she is 3. Food: The
infant drinks milk but when it’s about 18 months -
2 years old it will eat many things. Illnesses: An
infant can get cancer, diseases, febrile seizures
and other illnesses.

2. When you are 2-12 years old, you are a child.
Weight: A child’s weight is approximately 60 -
100lb. Height: A child’s height would be about
33 -63 inches. Bones: A child has less than 300
bones that fuse together and become stronger
when the child grows older. A child has 20
teeth, 10 at the top and 10 at the bottom but
soon he/she will have 32 teeth. Brain: A child’s
brain reaches up to 100% of knowledge when
the child is 5-6 years old. Muscles: A child is
able to use a lot of his/her muscular
coordination, however, the child is not able to
lift heavy things. Food: A child is able to eat
most food but they can’t eat hard things due
to their sensitive teeth. Illnesses: A child can
vomit, cough, get cancer, get diseases and it
can also get febrile seizures when he/she is 6
years old or under.
When you are 13-18, you are a
teenager/adolescent. Weight: An adolescent,
weighs approximately 100lb -120lb. Height:
Usually teenagers are tall so their height would
be about 4’ 10’’ -5/6’10. Bones: A teenager’s
bones are pretty strong and they have 205 bones.
Teeth: Teenagers have 28/32 teeth. Brain: A
teenager’s brain weighs nearly 1300g (3 pounds).
Muscles: By the age of 13, adolescents would
obviously be able to use all of their muscle
coordination and they will be strong enough to
hold many heavy things at least something that is
60-80lb or more. Food: Adolescents eat
everything they can. Their teeth are strong
enough to eat hard things. Illnesses: Most
adolescents get sick by coughing and stuff but it is
possible for them to get diseases, cancer, febrile
seizures and other things.