[Free Registration/Login may be required to access all resource tools.] This is a science text for Grade 4. It has sections on physical science, earth science, and life science. Each of those is broken down into eleven or twelve topics.

[Free Registration/Login may be required to access all resource tools.] Discusses the components and functions of the skeletal system; the structure of bone, and how bones grow and develop; and the different types of joints, and how they...

[Free Registration/Login may be required to access all resource tools.] Covers the major organs and general functions of the digestive system; the digestive functions of the mouth, esophagus, and stomach; and how digestion and absorption...

[Free Registration/Login may be required to access all resource tools.] Describes the layers and functions of the skin, and explains what you can do to help keep your skin healthy.

[Free Registration/Login may be required to access all resource tools.] Looks at the processes of sexual reproduction in flowering plants, including pollination, fertilization (seed production), seed dispersal, and germination.

[Free Registration/Login may be required to access all resource tools.] Discusses plants, their needs, and their importance, and describes the structure and function of roots, stems, and leaves.

[Free Registration/Login may be required to access all resource tools.] Discusses the parts and functions of the cardiovascular system.

[Free Registration/Login may be required to access all resource tools.] Introduces learned behaviors and the different methods of learning.

Anaken lives with his brother Kiko on a beautiful island. Today they are learning about life processes. Join them and find out what they learn.

This helpful page from Discovery Education provides science fair ideas in Life Science, Earth Science, and Biology. Testable questions to get you started are listed beneath each domain.

Sophie and Max are growing plants in their greenhouse. Join them, and learn about the life cycle of a plant.

A brief explanation of life cycle is provided along with pictoral respresentations of three different examples of life cycles (apple tree, butterfly and frog). The term metamorphosis is introduced and the resouce has an interactive...

Naomi teaches diving and meets all kinds of animals underwater. Join her and learn about grouping animals.

In story form, this site examines the similarities and differences among bacteria, plant cells, and animal cells. Drawings supplement the text for clarity purposes.

Study the science of isotopes in chemistry including naming isotopes, hydrogen, examples, fun facts, unstable, and stable on this site.

Explore information about enzymes in the science of biology including what they do, how they work, and things that affect enzyme activity.

A description of animal relationships of mutualism (symbiosis), commensalism, and parasitism. A real life example is given for each type.