When introducing vectors in Geometry, I like to explain how the most basic computer programming, particularly for video games, involves vectors. If a player holds down the right joystick for so long, the video character goes (x+4) paces. If a player the turbo, right, and a button, the character will run and jump x far. If there is a ledge, the player may jump onto to it if he jumps (y+5) high.