1. Chapter 11
The Life Cycle
Lesson 1
Changes During Puberty

2. Changes During Puberty
LESSON 1
Changes During Puberty
BIG IDEA
You will go through many physical, mental/emotional, and social changes during your teen years.
Building Vocabulary
The stage of life between childhood and adulthood, usually beginning somewhere between the ages of 11 and 15
adolescence
The time when you develop physical characteristics of adults of your own gender
puberty
Chemical substances produced in certain glands that help to regulate the way your body functions
hormones
Volunteer programs whose goal is to improve the community and the life of its residents
community service
Lesson Home

3. Changes During Puberty
LESSON 1
Changes During Puberty
BIG IDEA
You will go through many physical, mental/emotional, and social changes during your teen years.
Changes During the Teen Years
During adolescence, you will grow faster than you have at any time since infancy.
You will experience changes in how you think and feel as well as changes in your relationships. During your teen years, you will be setting out on a journey of discovery. The object of that discovery is you. You will meet new people, explore new ideas, and take on new responsibilities. These years are a chance to practice for life on your own when you become an adult.
New Vocabulary
adolescence The stage of life between childhood and adulthood, usually beginning somewhere between the ages of 11 and 15
Lesson Home

4. Changes During Puberty
LESSON 1
Changes During Puberty
BIG IDEA
You will go through many physical, mental/emotional, and social changes during your teen years.
Physical Changes
New Vocabulary
puberty The time when you develop physical characteristics of adults of your own gender
New Vocabulary
hormones Chemical substances produced in certain glands that help to regulate the way your body functions
Lesson Home

5. Changes During Puberty
LESSON 1
Changes During Puberty
BIG IDEA
You will go through many physical, mental/emotional, and social changes during your teen years.
Mental/Emotional Changes
During the teen years,
your mental skills will improve.
you will grow better at thinking critically and expressing yourself.
you will also begin to develop your personal ideals and values.
mood swings may cause sudden shifts from happiness to sadness or anger.
you may also begin to develop feelings of attraction toward others.
Lesson Home

6. Changes During Puberty
LESSON 1
Changes During Puberty
BIG IDEA
You will go through many physical, mental/emotional, and social changes during your teen years.
Social Changes
As a teen, you are learning to act independently and make more decisions for yourself. Your increasing independence can sometimes lead to differences with family members.
Many times, conflicts can arise when teens and parents or guardians disagree on how much independence a teen should receive. You may have a curfew to be home by 9 p.m. on school nights. Your parents or guardians set these rules to keep you safe. Other rules are set in the form of laws. If you continue to follow the rules your parents set and avoid breaking any laws, you show them that you respect the rules. Your parents will recognize that you are trustworthy. They may allow you to make more of your own decisions.
Lesson Home

7. Changes During Puberty
LESSON 1
Changes During Puberty
BIG IDEA
You will go through many physical, mental/emotional, and social changes during your teen years.
Social Changes
Peer influences such as friends who study hard or do volunteer work can be positive.
However, some influences, such as a friend urging you to drink alcohol, may be negative.
During your teen years, your peers are likely to play a growing role in your life. You may spend more time with friends and less with family members. Often, your peers will influence your ideas and your behavior. For example, you may change the way you dress or the music you prefer in order to be more like your friends. Changes like this are typical, but in other cases, peer influences can be unhealthy. For example, peers may urge you to engage in harmful behaviors, such as drinking or smoking. On the other hand, peer influence can also be positive, as in the case of friends who study hard or do volunteer work.
Lesson Home

8. Changes During Puberty
LESSON 1
Changes During Puberty
BIG IDEA
You will go through many physical, mental/emotional, and social changes during your teen years.
Social Changes
Community service gives you a chance to help people and develop your independence at the same time.
New Vocabulary
community service Volunteer programs whose goal is to improve the community and the life of its residents
Lesson Home