Try Dissection Lab free in your browser, with nothing to install and no account. A frog dissection on a tray, done in the same order and with the same tools as the real lab. Look the frog over and sex it, open the mouth, cut the skin and then the body wall along the lab's lines, pin the flaps back, and name each part you find: what it does, and how yours compares. Cut beside the abdominal vein, not through it. Every cut you undo is logged for your teacher.