First look at the slide under the low-power lens of the microscope. Focus carefully and record your observations. Now observe the slide under the high-power lens. Outline the characteristics and highlight the similarities and differences. Compare your cheek cells with your classmates.
Countries frequently have very different rates of cancer incidence.
Try to determine which countries have high rates of rare cancers or high rates of one specific kind of cancer. Develop a data table which includes the country, type of cancer and cause. Find out how the invention of the microscope helped scientists better understand the structure of the cell and how that structure is altered by carcinogens. Do some research on different environmental and lifestyle factors that cause cancer. Find out how pollution, tobacco and eating habits can increase the risk of cancer.