Cell Models http://www.cellsalive.com/cells/cell_model.htm
Comparison of plant and animal cells. http://waynesword.palomar.edu/lmexer1a.htm
Investigate with a virtual electron microscope. http://school.discoveryeducation.com/lessonplans/interact/vemwindow.html
Join a virtual tour of a cell at the National Science Foundation. http://www.nsf.gov/news/overviews/biology/interactive.jsp
Biology 4 Kids http://www.biology4kids.com/files/cell_main.html
National Research Council Canada Plant Cells http://www.nrc-cnrc.gc.ca/eng/education/biology/basics_plant.html
National Research Council Canada Animal Cells http://www.nrc-cnrc.gc.ca/eng/education/biology/basics_animal.html
Animal Cell http://www.kscience.co.uk/animations/animal_cell.swf
Use a virtual microscope to examine cells. http://www.nrc-cnrc.gc.ca/eng/education/biology/microscope/index.html