CK-12 Foundation
Ck 12: Digestion
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will explain the roles of the mouth, esophagus, and stomach during digestion.
CK-12 Foundation
Ck 12: The Small Intestine
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will explain how digestion and absorption occur in the small intestine.
CK-12 Foundation
Ck 12: Large Intestine
[Free Registration/Login may be required to access all resource tools.] Liquid to solid. What does this mean? Well, that's exactly what the large intestine does. It takes the remains of digested food - that is, food in which all the...
CK-12 Foundation
Ck 12: Digestive System Diseases
[Free Registration/Login may be required to access all resource tools.] You've probably had an upset stomach. Most likely it was due to something you ate. But imagine bleeding from your stomach. That's a little different than your...
CK-12 Foundation
Ck 12: Excretion
[Free Registration/Login may be required to access all resource tools.] Toxic waste must be disposed of properly or there can be serious consequences. It is the same with your body--your waste needs to be removed from you. And that is...
CK-12 Foundation
Ck 12: Urinary System
[Free Registration/Login may be required to access all resource tools.] In this interactive tutorial students will explain how the urinary system filters blood and excretes wastes.
CK-12 Foundation
Ck 12: Kidneys
[Free Registration/Login may be required to access all resource tools.] Why are your kidneys so important? Find out in this online tutorial. You will learn to describe the roles of the kidneys in homeostasis.
CK-12 Foundation
Ck 12: Inflammatory Response and Leukocytes
[Free Registration/Login may be required to access all resource tools.] Whenever the skin is broken, it is possible for pathogens to easily enter your body. They get past the first line of defense, and run into the second line of...
CK-12 Foundation
Ck 12: The Lymphatic System
[Free Registration/Login may be required to access all resource tools.] Almost all of us have had a sore throat at some time. Maybe you had your tonsils out when you were younger? Why? Your tonsils are two lumps of tissue that work as...
CK-12 Foundation
Ck 12: Humoral Immune Response
[Free Registration/Login may be required to access all resource tools.] In the following tutorial students will describe the steps that occur in a humoral immune response.
CK-12 Foundation
Ck 12: Cell Mediated Immune Response
[Free Registration/Login may be required to access all resource tools.] Do cells really attack other cells? They sure do. When they can, the T cells search out and destroy "bad" cells. In the following tutorial students will identify the...
CK-12 Foundation
Ck 12: Autoimmune Diseases
[Free Registration/Login may be required to access all resource tools.] Joint pain. Not an uncommon problem as you grow older. Is it due to normal wear and tear on the joints? Possibly. But rheumatoid arthritis is an autoimmune disease,...
CK-12 Foundation
Ck 12: What Is Chemistry?
[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will define chemistry and differentiate between the macroscopic and the microscopic as it relates to chemistry. They will begin to...
CK-12 Foundation
Ck 12: The International System of Units
[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will begin to identify the seven base units of the International System of Units. They will understand the commonly used metric...
CK-12 Foundation
Ck 12: Scientific Method
[Free Registration/Login may be required to access all resource tools.] Describe how the Renaissance period in history changed the approach to science. Identify the steps of the scientific method. Differentiate between the independent...
CK-12 Foundation
Ck 12: Unit Conversions
[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will begin to identify and use conversion factors and to also use the method of dimensional analysis to convert between units....
CK-12 Foundation
Ck 12: Concepts, Classification and States of Matter
[Free Registration/Login may be required to access all resource tools.] Freshly baked bread and cherry pie are two delicious parts of any meal. What happens to the ingredients that go into the bread and the pie as they are heated in the...
CK-12 Foundation
Ck 12: Changes in Matter
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students identify the chemical properties of a substance and describe chemical changes and differentiate them from physical changes....
CK-12 Foundation
Ck 12: Liquids
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will describe a liquid according to the kinetic-molecular theory. They will also learn how a liquid exhibits surface...
CK-12 Foundation
Ck 12: The Nuclear Model of the Atom
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will distinguish between the three main subatomic particles and understand the contributions of J. J. Thomson, Robert...
CK-12 Foundation
Ck 12: Isotopes and Atomic Mass
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will be asked to define atomic number, mass number and understand how isotopes differ from one another. They will be able...
CK-12 Foundation
Ck 12: The Quantum Mechanical Model
[Free Registration/Login may be required to access all resource tools.] In the following online tutorial students will calculate the wavelength, frequency, and energy of light using Planck's constant and the speed of light. They will...
CK-12 Foundation
Ck 12: Electron Arrangement in Atoms
[Free Registration/Login may be required to access all resource tools.] In the following online tutorail students will learn how to express the arrangement of electrons in atoms through electron configurations and Lewis valence electron...
CK-12 Foundation
Ck 12: History of the Periodic Table
[Free Registration/Login may be required to access all resource tools.] In this online tutorial students will begin to explain the use of chemical and physical properties in the historical development of the Periodic Table. They will be...