Germeraad / Cells

Cells Alive!
http://www.cellsalive.com/cells/3dcell.htm

Learn.Genetics: Genetic Science Learning Center
http://learn.genetics.utah.edu/content/begin/cells/insideacell/

Organelles.Org
http://www.facstaff.bucknell.edu/kfield/organelles/

The Biology Project: Cell Biology
http://www.biology.arizona.edu/cell_bio/tutorials/pev/page3.html

When you're finished, go back and finish the "How Big" activity.
http://www.cellsalive.com/howbig.htm