The digestive system is shown with details of the mouth, salivary glands, esophagus, stomach, liver, pancreas, and intestines. Learning is enhanced by the cutaway sections and enlargements of the stomach and intestines which further illustrate the system. This Model Activity Set includes a full-color 24" x 18" markable model of durable vinyl and an activity guide with background information, basic understandings, teacher-developed activities, a glossary, a key to model structures, color transparencies and a black line master. For Grades 3-12 and Ages 8-18.