Chapter 3 Understanding Human Development 65
The research continues, but the following include some of the basic prin-
ciples that explain what is already known:
• Development is relatively orderly.
• Development is a gradual, continuous process.
• Development is interrelated.
• Development varies among individuals.
Development Is Relatively Orderly
Development occurs in a predictable and orderly manner—a sequence of
steps that consistently follow one after another. Children learn sounds, then
words. Eventually, they learn the letters of the alphabet and that these can be
combined to represent words. Each of these steps must occur before children
can read. Teachers use their knowledge of how development progresses to
design effective learning strategies appropriate to the age of their students.
Development Is a Gradual, Continuous
Process
Most developmental changes happen gradually and are apparent over
time. A three-year-old may learn to ride a tricycle, while a six-year-old mas-
ters the more diffi cult skills needed to ride a bike. A teen refi nes these skills
and uses them, along with additional knowledge and judgment, to learn to
3-2
As teens encounter
new situations,
they rely on
social-emotional
developmental skills.