People have been able to capture still pictures for quite a while now, but how did people get these still images to move? Once still images are gathered, they are strung together in a sequence, which is then rolled into film and projected. The images produce a moving picture which can deal with a change in the speed, angle, color, size, position, and shape of the subject that is projected in the sequence of images. This is one of the first ways that images were animated for film.

Sources:

http://www.filmeducation.org/staffroom/film_in_the_classroom/animation/animation.php