Experiment:
To demonstrate how air flows from high to low pressure areas lets take a look at a how water behaves in a similar situation.
Materials Needed:
1. Plastic cup
2. Large pan
3. Scissors or a punch
4. Water

Step 1. Fill the pan half way with water.
Step 2. Punch or cut a small hole in the bottom side of the cup. Make sure the hole will be below the water line of the pan.
Step 3. Place your finger over the hole and fill the cup with water.
Step 4. While keeping your finger over the hole, place the cup in the pan.
Step 5. Remove your finger.

What happens when you let go? What is the height of the water in the cup in relation to the water in the pan? The water in the cup flows into the water in the pan until both have the same height.

How does this experiment relate to how air flows from a high to a low-pressure area?
Our atmosphere works much the same way. The cup, which is filled higher than the pan, has more pressure than the pan. The water flows from the higher pressure to the lower pressure until they are equal and the water is level. Air flows from a high pressure area to the low pressure areas because the air "wants" to be level and have the equal pressure.