Texas Education Agency
Texas Gateway: It's All About Cell Theory
The following tutorial is an explanation of cell theory.
The Wonder of Science
The Wonder of Science: Ms Ls1 1: Cell Theory
Work samples, phenomena, assessment templates, and videos that directly address standard MS-LS1-1: cell theory.
CK-12 Foundation
Ck 12: Life Science: 2.3 Cell Theory
Learn about the cell theory and levels of organization in a multicellular organism.
Famous Scientists
Famous Scientists: Theodor Schwann
Learn about German Physiologist, Theodor Schwann, one of the scientists who helped develop the cell theory.
Famous Scientists
Famous Scientists: Lynn Margulis
Read the biography of Lynn Margulis in this article. Learn how her endosymbiotic theory of eukaryotic cell development revolutionized our understanding of the origin of life.