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Interactive
University of Colorado

University of Colorado: Ph Et Interactive Simulations: Fluid Pressure and Flow

For Students 9th - 10th
Explore pressure in the atmosphere and underwater. Reshape a pipe to see how it changes fluid flow speed. Experiment with a leaky water tower to see how the height and water level determine the water trajectory. Java required.
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Activity
Exploratorium

Exploratorium: Go With the Flow

For Students 3rd - 8th
This lesson plan is a great way to observe the flow of water. Kids can do this experiment at home by following this easy procedure, complete with pictures.