Why can't cells continue to grow larger and larger to become giant cells, like a blob? Why are most cells microscopic in size? Find out answers to these questions through this "hands-on" activity that simulates the changing relationship...

In this hands on site, you will find several simple, fun, cheap, and educational surface area demonstrations to use when studying cell membranes.

Explore medical breakthroughs in treating epilepsy. Discover how negative and positive particles behave in an electrically neutral environment, and perform an experiment to demonstrate how the human body can conduct electricity.

This lesson explains how cells were first discovered, and introduces scientists that were a vital part of this discovery. It is 3 of 4 in the series titled "Discovery of Cells."

This lesson explains how cells were first discovered, and introduces scientists that were a vital part of this discovery. It is 4 of 4 in the series titled "Discovery of Cells."

This lesson explains how cells were first discovered, and introduces scientists that were a vital part of this discovery. It is 1 of 4 in the series titled "Discovery of Cells."

A learning exercise regarding antiobiodies and antigens.

This lesson will illustrate the structure and function of the cell. It is 4 of 4 in the series titled "Cells: The Structural and Functional Units of Life."

This lesson explains how cells were first discovered, and introduces scientists that were a vital part of this discovery. It is 2 of 4 in the series titled "Discovery of Cells."

This lesson will illustrate the structure and function of the cell. It is 1 of 4 in the series titled "Cells: The Structural and Functional Units of Life."

[Free Registration/Login Required] This flipchart is intended to introduce plant and animal cells to fifth graders. Pictures, a web link, and several opportunities for student participation are included. An end-of-lesson assessment is...

This gallery shows pictures of a variety of cell types with hyperlinks to additional information about cells. Very interesting pictures.

[Free Registration/Login Required] The students have to drag the different cell organelles into the cell. The activity is a fun and engaging way to help students remember the main cell organelles.

[Free Registration/Login Required] This flipchart presents various types of cells, their structure, and function. There is an assessment section included.

[Free Registration/Login Required] The teacher will use this lesson plan to review cells and genetics.

[Free Registration/Login Required] This flipchart can be used as a quiz or test covering cells, cell function, and organs of the body.

[Free Registration/Login Required] This flipchart discusses the stages of cell division and contains illustrations of the phases of the process. Assessment questions are included.

Describes the seven characteristics that define life - cells, homeostasis, heredity, use of energy, reproduction, response to environmental stimuli, and evolution and adaptation.

Gather information about prokaryotic and eukaryotic cells and also the main parts and organelles of a cell.

[Free Registration/Login may be required to access all resource tools.] Introduces cells, cell theory, and the levels of organization in organisms.

Kids learn more about the science of the cell. Smallest biological form of life.

This lesson will introduce the 7 characteristics of all living things. It is 4 of 4 in the series titled "7 Characteristics of Life."

Excellent article on a unicelluar organism, the paramecium. Includes details on its environment, paramecium types, and environmental importance.

This photo shows an enhanced microscopic view of cells.