This document defines animation and describes different animation techniques. Animation is created by displaying a sequence of images rapidly to give the appearance of motion. It can be created using traditional methods by photographing drawings one frame at a time or digitally using software. Effective animation typically uses a frame rate of 24 frames per second. Key animation principles include persistence of vision and phi phenomenon. Popular animation techniques include cel animation and tweening used in Disney films as well as Flash and 3D animation. Animations can be saved in formats like GIF, QuickTime, AVI, and MPEG for display on websites, in multimedia projects and films.