Double pour

The child on the right has a green plastic cup in her right hand and a metal measuring cup in her left hand. She reaches down into the water table to scoop water into each cup. She then reaches up to the two holes drilled in the plastic toner deposit and begins to pour water into those two holes. There are two interesting aspects to her pouring. One is that she is pouring water into holes that are vertically orientated making it more difficult to get the water in the holes. The other is that she uses two different motions with different hand orientations to pour from the cups. Her left hand, which is holding the metal cup, pours overhand with the back of the hand up. Her right hand, however, pours underhand with the back of the hand down.