Planning is an important step in creating an animation project. This involves listing the scenes that need to be animated, the characters to design and the different backgrounds to incorporate.
In animation, a scene is the action happening in front of the camera while the camera does not change angle. As long as the camera does not stop "filming", you are in the same scene. A good example would be two characters talking. When the camera is facing the first character, this is one scene. When the camera cuts and films the second character, you have a second scene. When the camera returns to the first character, you have a third scene, and so on.
A group of scenes occurring in the same location about the same action or event is called a sequence. When there is a change of location or subject, it becomes a second sequence.