These are a few hands-on tools I use to engage students in the learning process. I simply tie them into a lesson/game that fits well with the tool I'm using. Although there is a small investment involved to add these products to your equipment, it's interesting to see how captivated students are when they can actually see and feel the effects of an occluded artery, or how much sugar and fat are in the foods they eat. Students also are amazed at the fat chunk and that although it weighs the same as muscle, it takes up twice the space, plus it is gross to feel. The Pack of Toxic Tar Display contains two removable cigarettes filled with gooey "tar." The tar in these two cigarettes represents the amount of toxic tar that a smoker receives from smoking one pack of cigarettes.