` Life Systems: Grade 8 - Cells, Tissues, Organs, and Systems

1. demonstrate an understanding of the basic structure and function of plant and animal cells, and describe the hierarchical organization of cells in plants and animals;
2. investigate basic cellular processes and certain specialized cells in plants;
3. describe ways in which study of the structure, function, and interdependence of human organ systems can result in improvements in human health.

Site Name	Online	O.E.	Description
Cell Structures		1	An organelle is a small structure within the cell (organelle means 'tiny structure').
The Heart: An Online Exploration		3	Explore the heart on-line.
Making Three Dimensional Plant and Animal Cells		1	Provides students with a hands-on activity which will enhance their understanding of the 3-D characteristics of cells while reinforcing their knowledge of plant and animal cell structure.
Types of Cells		2	There are over 200 types of cells in the human body, that very greatly in size, shape, and function.
Interactive Eye Site		2	Find out exactly what your optometrist sees when he shines those lights in your eyes.
The Jelly Bean Problem		1	In this activity students are challenged to eat some candy as a unicellular organism would do it. By solving this problem students simulate the cell process called endocytosis.