Here's what you have:

-Two 8-liter jugs, filled with water
-One 3-liter jug, empty
-Four infinite size, empty pools

Here's what your objective is:
Fill each of the four pools with exactly 4 liters of water.

Here are your constraints:

-You have nothing else at your disposal.
-There is no other water aside from the two 8-liter water filled jugs.
-Once water is poured into any of the 4 pools it cannot be removed from there.
-The jugs are not symmetric so you cannot measure amount by eye or judge based on shape.