You will need:
* an eyedropper
* food coloring
* spoon
* tall jar
* water
What to do:
Step 1: Fill the jar almost to the brim with cold water.
Stir the water,keeping the spoon near the top
Make the water spin as fast as possible.
Step 2: Now watch for the vortex to appear.
Add a few drops of food coloring to the
water to highlight the shape of the vortex