Academic standards correlations on Teachers' Domain use the Achievement Standards Network (ASN) database of state and national standards, provided to NSDL projects courtesy of JES & Co.
We assign reference terms to each statement within a standards document and to each media resource, and correlations are based upon matches of these terms for a given grade band. If a particular standards document of interest to you is not displayed yet, it most likely has not yet been processed by ASN or by Teachers' Domain. We will be adding social studies and arts correlations over the coming year, and also will be increasing the specificity of alignment.
In this activity, students explore the structure and function of the cell. They begin by identifying the cell as the common unit of life in all living organisms, large and small. Students learn about single-celled organisms and how they carry out different life functions. Then they use a Web activity to explore how cells divide during the process of mitosis. Next, students learn how cell specialization takes place in vertebrate embryos. They explore a gallery of different kinds of specialized cells and compare each cell's structure and function. After making drawings of these cells, they place their drawings in the appropriate location on a human body outline. Finally, students complete a Web activity that demonstrates how white blood cells are specialized to fight viruses.
1. Ask students to report their research on the largest and smallest living organisms. Then ask:
2. Show the Single-Celled Organisms video and discuss the following:
3. Show the Mitosis video. Explain that cells divide during a process called mitosis. Single-celled organisms can reproduce by this method to produce two identical cells. Multicellular organisms use mitosis to grow and to replace worn-out cells.
4. Have students complete the mitosis section of the How Cells Divide: Mitosis vs. Meiosis Web activity
5. Explain that multicellular organisms are more complex than unicellular ones. They have tissues and organs made of specialized cells that perform various functions such as digesting and circulating nutrients and oxygen and getting rid of wastes. Ask:
7. Have students explore the Gallery of Cells for similarities and differences in cell structure and function. Ask them to draw at least three types of specialized cells, one on each index card, and to label the cell type and any cell structures. Then have students describe the similarities and differences among the different cells and how their structure is related to their function.
8. Attach the life-size outline drawing of the human on the board and ask students to tape their cell drawings to the place in the body where these cells would be found. Afterwards, ask:
Have students research and draw these other cells and then add them to the body outline.
9. Show the Immune Cells in Action video. Discuss how white blood cells are specialized to fight viruses. Ask students where they would expect to find white blood cells in the body and if there might be more of these cells in one area of the body than in another. Have students explore the action of immune cells with the Fighting Back Web activity. Ask: