Which activity gets your heart pumping more: using the computer, climbing the stairs, jumping rope, running, or walking? Youngsters take a heart rate reading after 30 seconds, one minute, and three minutes of each activity. The handout...

Energize the cells of young biologists with an edible life science activity. Engaging students in exploring the inner workings of plant and animal cells, this activity involves using colored jello and various sweet and...

Young pupils are introduced to the male reproductive system, the process of reproduction and conception through worksheets, discussion, and instructional guidance. 

What do Mike Tyson, Ellen DeGeneres, and Paul McCartney have in common? They're all famous vegetarians. Using the resource, scholars learn about the pros and cons of eating a vegetarian diet. They read a fascinating history of...

BioAnin presents 3-D labeled images of all of the major systems of the human body, for example, the digestive system and the endocrine system. The images are embedded in slideshows. The site also has interactive 3-D models that can be...

Explore the anatomy of the human body. Click on an organ or other body part to read more about its structure and function, and then try out an interactive activity for that organ.

Kids learn about the science of the Nervous System in the human body. Brain, spinal cord, and nerves communicate.

Describes the main tissue types and organ systems of the body and how they function together.

Describes the different parts of the nervous system and how it is organized.

This comprehensive study guide covers the main terms and concepts needed for a unit on the organization levels in the human body from organ systems to cells.

Learn about the nose and its function in the olfactory system of the human body. For auditory learners, a read-aloud feature is also available.

This site from the Department of Chemistry at the Washington University provides a deetailed study of the role of hemoglobin in blood physiology. The article is somewhat in-depth, complete with pictures, charts, and a bibliography.

A collection of transverse and coronal views of the internal anatomy of the human body. The webpage also has a keyword search for specific organs.

Learn about the three types of muscle tissue, how a muscle contracts, and how muscles are adapted for exercise. [3:40]

Use this review guide of the human body nervous system to understand its importance to the human body.

Review the structure and function of the human body's muscular system.

This site from Bartleby.com contains an intense, in-depth article from Henry Gray's Anatomy of the Human Body on the fore-brain or prosencephalon. The article discusses the thalamus throughout and touches on its functions as a whole.

This thorough site delves into the structure of the bone, the main bones in the human skeleton (definition and pictures), and a comparison of the male and female pelvis.

Describes the contributions of scientists over hundreds of years leading to our current understanding of the eye and vision.

Read about the findings from the scientific group from the National Center for Human Genome Research, which published a modification to traditional karyotyping that permits rapid identification of chromosomal alterations.

This study guide on the immune system covers key terminology and the different lines of defense the human body has to protect itself against pathogens. It is available for download with free registration.

What do you know about your digestive system? This site feature factoids and more interesting information concerning this human body system. Trace the path of food from one end to the next.

Here, you will find an introduction to the parts and functions of the respiratory system. In addition to learning about how the respiratory system works to keep you healthy, you will also read about problems that impede the breathing...

Find excellent information about the human lungs, and how they contribute to the gas exchange process for the body. Inside, find detailed illustrations and a short, narrated animation of the respiratory system at work.