I loved the idea Michelle presented using the king-sized bed sheet for teaching the flow of blood through the heart. I am planning on using a slight modification to this for my Immunology class for MLT students next term. One of the difficult concepts taught in this class is how the T- and B-lymphocytes are activated and what processes they go through for growth (proliferation) and differentiation. I plan on having a neutrophil, a macrophage, a T-lymphocyte, and a B-lymphocyte on the sheet and placing velcro strips in areas where different processes take place. Then I will create separate items that can be placed onto the velcro strips to teach the various processes, cytokines, etc. that occur. I will use this to teach the processes and then have students correctly add the "pieces" themselves to practice.