As you can see, the box is quite large in comparison to the table. The box is set at an incline by using a wooden tray to prop it up. The box is taped to the wooden tray and to the end of the table. A hole is cut in the bottom end of the box that overhangs the table to allow the corn to drop into the tub at the end of the table. Large holes are cut on each side of the box, two on one side and one on the other. The holes are staggered. There is another large hole cut on the high end of the box.
Here is a view from a different angle. You can clearly see the big hole on the elevated end and the two holes on the other side.
Since I embrace these physical challenges, I always have stools for children to use to extend their reach. I offered this little guy a stool and he gladly accepted.
This little guy actually figures out a way to watch what happens when he drops the corn down the box. He moves his stool to one side, and then watches the corn fall down the box from a side window.
What if you really want to get a bird's eye view of the corn tumbling down the box? Well, you could stand on the lip of the table.
Though I did not originally set up the box incline with the physical challenges in mind, I now see them as really important. This is a good case of the children showing me what they need. And they need physical challenges and will find multiple was to partake of them.