Seventh graders culminated their study of the human body by creating their own Human Body Expo. The bodies presented at Yavneh’s expo were made from recyclable garbage. The goal was to create a body showcasing two of the body systems learned in class. Each group of students created a prototype with drawings, measurements and a list of materials to help guide them through the building process. The project included an interactive component showing the functions of the systems and the seventh graders presented their projects to the early childhood classes. In addition to the models, each group created a book to read to the young visitors. The book helped the ECD students prepare for their visit to the Expo. Students became the teachers as the seventh grade reviewed with the early childhood students what they had learned in their human body unit in pre-k.