Students explore several parts of the body system in the eight lessons of this unit. Through several hands-on activities, the skeletal, muscular, digestive, circulatory and nervous systems are observed.

Students examine the role of the immune system in the human body. They conduct a hand-washing experiment, answer questions while viewing videos, discuss key vocabulary, draw and label illustrations, and observe demonstrations and record...

[Free Registration/Login may be required to access all resource tools.] Did you know that blood is a tissue? Blood is a fluid connective tissue that is made up of red blood cells, white blood cells, platelets, and plasma. Learn more...

[Free Registration/Login may be required to access all resource tools.] Defines and describes red blood cells and white blood cells, and describes the roles of platelets.

Find out about the characteristics and components of blood with informational text, diagrams, examples, and review questuons.

[Free Registration/Login may be required to access all resource tools.] In this interactive tutorial students will learn to explain how the heart pumps blood throughout the body. Students will explain the composition of blood and will...

This study of white blood cells includes informational reading material, illustrated diagrams, vocabulary, and self-checking review and application questions.

[Free Registration/Login may be required to access all resource tools.] Some defenses, like your skin and mucous membranes, are not designed to ward off a specific pathogen. They are just general defenders against disease. Your body also...

[Free Registration/Login may be required to access all resource tools.] Problems can occur with red blood cells, white blood cells, platelets, and other parts of the blood. Many blood disorders are genetic, meaning they are inherited...

The circulatory system transports substances between the exchange surface and cells. It delivers oxygen and glucose to the tissues for respiration, which is the release of energy to cells.

This lesson focuses on blood including it's functions including transporting materials around the body and protecting against disease. It explains the components of blood and the functions of each and offers a link to an assessment.

An interactive, self-guided lesson on the function of the human immune system and how medical intervention prevents disease. This lesson has many descriptive animations as well as graphs and diagrams to help with understanding. There is...

Sometimes, against a uniform, bright background such as a clear sky or a blank computer screen, you might see things floating across your field of vision. What are these moving objects, and how are you seeing them? This video explains...

[Free Registration/Login may be required to access all resource tools.] A scrape is a break in the skin that may let pathogens enter the body. If bacteria enter through the scrape, they could cause an infection. These bacteria would then...