This lab introduces students to plant(onion) cells and animal (cheek)cells. It can also be a good introduction to using the microscope. It is an easy lab to do that uses minimal supplies. Students need to have a microscope, slides and coverslips.
The lab sheet gives students the purpose of the lab, the materials needed, the procedure which inculdes what they need to do for collecting data, and a conclusion. Students need to create the data table and observations themselves. They are also asked to write a complete conclusion.
*It is best if you cut the onion into pieces and soak it in water before using it. Make sure students peel off a think layer of the onion to put on the slide.