Students will work in groups of 5 to create a model of the excretory system out of recycled materials found around the school. The project must include and label the kidneys, ureters, bladder, urethra, renal veins, renal arteries, inferior vena cava, and abdominal aorta. Extra points will be given for including nephrons in one kidney. Students are encouraged to be creative and use items like cans, tubes, bottles, straws, and small trash to construct the different organs. The completed project will be displayed on a reused poster board.