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...

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

Can you catch the same cold twice? Elementary and middle schoolers learn about what happens when a virus attacks their bodies, and how the immune system never forgets a virus, with an entertaining comic book. The packet includes...

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...

Carbon, the base for all organic compounds, exists in nature in its purest form as graphite or diamonds. The 25th lesson in a series of 36 teaches pupils the nomenclature of organic compounds. Learners read about how to use the IUPAC...

Begin educating young people on how to be smart and safe with medicine. Use a set of workbook pages to explore what symptoms are, uses for medications, how to read prescription and over-the-counter medicine labels, and who to trust when...

Eliminate the hard work of creating an entire literature unit with this reading guide for the novel Sarah, Plain and Tall. From background information about the author and her motivation for writing the story to...

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...

Are spiders related to crabs? Study the order of arthropods with a reading selection about animal diversity. It provides details about each class within the order, as well as vivid pictures and explanatory charts. 

Our oceans are composed of many complex relationships. Young oceanographers explore relationships between organisms, understand the world ocean's currents, and discover the effects of water pollution and how it behaves. There are...

Research indicates that marijuana can negatively affect coordination and judgment, making it dangerous to drive while under the influence. But does it increase the risk of car crashes? An informative fact sheet describes the ways...

An informative lesson has learners read about, discuss, and study the classification, structure and importance of the following biomolecules: carbohydrates, proteins, lipids, nucleic acids, and enzymes. 

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

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

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.

Explore the many systems found within the human body.

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.

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...

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

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 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.

What do you know about the respiratory system? Check out this site to learn more about this fascinating body system. This resource features slides of the different parts of this system.

Excellently detailed drawing (with labels) of the digestive system with an accompanying explanation of the digestive process. Includes a glossary and a blank label me print-out.

An overview of the structure and function of a complex, multicellular organism. This article discusses levels of organization and examples of systems.