Kid's learn about the science of states of matter. Solids, liquids, gases, and even plasma.

This tutorial helps students understand the Kinetic Theory, which explains the effects of temperature and pressure on matter as it goes through phase changes.

Explore the concept of matter in this Spanish-language encyclopedia entry. This site features the properties of matter, the Law of Conservation of Matter, and other important features of matter.

A lesson plan using dry ice to show the four states of matter. Included are inquiry-based questions to use as part of the demonstration.

This lesson will discuss the structure and function of the cell membrane. It is 3 of 6 in the series titled "Cell Membrane."

This lesson will discuss the structure and function of the cell membrane. It is 4 of 6 in the series titled "Cell Membrane."

Fusion is the process at the core of our Sun. What we see as light and feel as warmth is the result of a fusion reaction: hydrogen nuclei collide, fuse into heavier helium atoms and release tremendous amounts of energy in the process.

Fun site that teaches users about what red blood cells are and what they do. Provides users with interactive pictures of terms mentioned.

A brief overview of red blood cells accompanies a blood smear observation experiment. Includes drawings and photographs to aid in understanding.

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.

The Earth's magnetosphere helps shield us from cosmic and solar radiation. This segment offers a great explanation of this abstract concept along with numerous images and diagrams. An interactive game is provided as well.

Discover interesting facts about the lower region of the Sun's atmosphere called the chromosphere.

A general review of coronal loops found in the solar atmosphere.

The photosphere is the visible "surface" of the Sun. View pictures and read a description of the photosphere in this article.

Coronal holes are areas in the Sun's atmosphere that appear dark in X-ray and ultraviolet images of the Sun. View a picture and read a description of coronal holes in this article.

Understand the physiological make-up of human blood.

Discover the purpose of the cell membrane to the cell's function.

This encyclopedia article from Wikipedia on helper T cells discusses what Helper T cells are and the function of the CD4 protein.

Collapsed stars, between white dwarfs and black holes, can be studied as quark-gluon masses, or quark-hyperon groups. Extreme pressures lead to extreme states.

Reference information about the study of cells. Includes a chart comparing plant and animal cells and one examining the structure of a cell.

Provides a labeled diagram of a plant cell and descriptions of the characteristics and functions of many of its organelles.

Wikipedia offers brief but accurate information on cytoplasm, the matter contained within the plasma membrane of a cell.

Home of Dr. Charles R. Drew, an African American physician and researcher whose leadership on stockpiling blood plasma saved lives in World War II.