To set up a lesson plan, have the students learn the vocabulary terms since these terms will appear in the text and animations as you go through the module. Then have then do the pre-test. You may want to review cell structure with your own text and diagrams since the first part, Basic Cell Parts Involved In Mitosis, deals only with these parts. You may want to quiz the students on the parts mentioned as knowledge of these parts is essential to understanding the process of cell division.
The next section, Why Must A Cell Divide?, is a demonstration of the surface to volume ratio concept to show that the cell membrane cannot continue to diffuse in and transport in the food and oxygen that the cytoplasm needs if growth continues beyond a certain point. The student is directed to solve the mathematical problems of determining surface area and volume of cubes, and the ratios between the two. The purpose is to show that a cell has two choices, either divide or die. It may be helpful to review the mathematics involved before viewing this portion.
The section, What Does Mitosis Do?, deals with the functions of mitosis, growth and repair. The animations clearly show growth from infancy to adulthood and repair in the healing of a broken bone. After viewing the pictures, the student should be able to answer that particular question about the functions of mitosis.
The last section, Built-In Controls In Mitosis, shows one of the controls, contact inhibition, where cells placed in a petri dish will continue to divide until the bottom of the dish is filled and the cells are all in contact with one another. Then division stops. There are also “go, no-go” switches at certain points in the cell cycle and in mitosis itself. Further, cells have growth factors, proteins that promote cell division. Strands of DNA called genes direct the assembly of amino acids into proteins. If mutations occur in the DNA, then genes are altered resulting in a change in the function of one or more of the several proteins that normally control growth. Abnormal division, i.e., cancer will result. Abnormal cell division in cancer is also presented in animation.