Microorganisms: What are Protozoa?http://www.childrensuniversity.manchester.ac.uk/interactives/science/mic... Infection/Detection/Protection:http://www.amnh.org/nationalcenter/infection/infectionindex.html Microorganisms Around Us: http://www.bbc.co.uk/schools/scienceclips/ages/10_11/micro_organisms.shtml Microbe Zoo: http://commtechlab.msu.edu/,sites/dlc-me/zoo/ Microscopes: Parts of A Microscope:  http://www.biologycorner.com/microquiz/# Virtual Microscope: http://www.udel.edu/biology/ketcham/microscope/ Virtual Electron Microscope: http://school.discoveryeducation.com/lessonplans/interact/vemwindow.html