Rate of Change? Exit Fullscreen We are looking at rate of change this week. As a warm-up, let us consider the rate of change in height of water in a vase if there is a constant flow of water into it, say, from a hose. First take a look at this simple cylindrical vase. Can you produce a simple plot of the rate of change in water height in this vase as a function of time? Now, how about this more complicated vase? Lastly, how about this typical vase?