Hosted by the Wisconsin Online Resource Center, this fun and informative web-based tutorial on the Construction of the Cell Membrane was created by Barbara Liang and Chad Blohowiak. Although the site content is geared for an older audience, the tutorial is so clear and easy to navigate that younger students curious about cells will enjoy it as well. Through the process of building the molecular structure of an animated cell membrane, site visitors will learn "the makeup and the basis for cell membrane function." The 23-page tutorial is fairly brief and interactive with questions and assignments such as placing the fibrous receptor or glycoprotein into the cell membrane. This site also has link for downloading the required software plug-in.