I introduced this work to O today. I set out 2 small glasses with the glass on the left filled halfway with water. I showed her how to fill the dropper with water and then release the water into the 2nd glass. She was interested, but she didn't stick with the task for very long. She kept forgetting to let go of the bulb once she squeezed it, so she was not getting much water in the dropper. I hope she'll enjoy this work more when we try it tomorrow.