How deep was the water? How much water was there really in the big puddle? Could it fill a bath tub? How could it even be measured?
Who could make the biggest splash? How would they even judge how big the splash was? Could it be measured? Was the biggest splash the one that soaked the most children standing nearby?
Could the water be used to make soup? How much water was needed in the recipe? Would anyone even want to eat mud soup?
How much water was in one's rain boots after a big splash? How long did it take to dump it out? How did all that water get in there in the first place?
How much more water was needed to cover the stump? Was the stump floating or sinking in the water? How tall was the stump? What if it rained more...would the stump be under water?
How long would it take to run across the puddle? Who could run the fastest over the water? How could we measure and record the puddle races?