Changing Variables - Variables that can be modified or changed during the runtime of a program.
Sometimes we need variables for more than keeping track of a score during a game. We might need it control how much nectar to collect or how long to draw a line. Those values might change during a program from place to place, so we need to create and use a "changing variable".
How can information be stored?
In a game, how do you know who is winning? How do you know how many "lives" you have left?