The Nine Concepts
According to the U.S. Department of Education, there are nine basic concepts
that every elementary and middle school child should know. We've listed
them here, along with some questions about the Chesapeake Bay to help
you and your children start thinking about these concepts in context.
Scientists use organization and classification to sort through the variety
of objects and phenomena in the natural world.
- Can you name ways blue crabs and oysters are the same?
- Can you name some ways they are different?
• Cause and Effect
Nature is filled with rules and laws that shape our world. Discovering
these laws is at the root of science.
- What happens when too many nutrients fill the Chesapeake
A system is a group of smaller units that combine and work together in
an orderly way to form a larger unit known as a whole.
- An estuary is a special system. How do its fresh water and
the salt water work together to create a habitat suited for
fish, shellfish, and other creatures?
Objects and energy vary in quantity. Scales, such as thermometers, are
used to measure and compare those variations.
- What are some things a scientist might measure with a
scale in the Chesapeake Bay?
A model is a representation of a thing or phenomenon. Models can transform
a difficult concept into a hands-on learning experience.
- Imagine you are making a model of the Chesapeake Bay.
What are some things that you might include?
Everything in nature experiences change.
- The Bay changes with the seasons. List some changes that you might
expect to occur in the Bay between summer and winter.
• Structure and Function
The way an object is made often relates to the function it performs. The
study of this relationship is a fundamental part of science.
- Can you describe an animal in the Bay whose special body
helps it to survive?
Many things in nature share similar properties, but all organisms have
distinct properties that make them unique.
- Fish, oysters, and crabs all live underwater. Can you name
some things they have in common? Can you name some
ways in which they are different?
It takes many different parts to make a system work. The study of diversity
helps children understand and see the ways the systems of the world are
- Can you name some of the plants and animals that work
together to form the Chesapeake Bay's ecosystem? What
if the Bay only contained one kind of plant?
Chesapeake: A Bay Trippers Adventure
is broadcast by MPT's K-12 Educational Video Service.
Click here to check the schedule.