The document discusses different types of animation including clay animation, computer animation, and stop motion animation. It explains that animation works by presenting frames rapidly, around 50 frames per second, to create the illusion of continuous motion. Specifically, it defines 2D animation as using consecutive images to depict motion, and 3D animation as using 3D computer graphics models. The document also notes some common uses of animation in movies, games, presentations, and more, and lists several animation software programs.