I attached it by cutting a rectangular flap on the side of the
box adjacent to the table. The top and two sides of the flap
were completely cut through, but I only scored the bottom so I
could fold it over and tape it to the lip of the table. Since
the lip was two inches wide, I actually scored it twice, once at
the box and once where I wanted the flap to bend over the lip.
The reason it is taped is to keep it attached to the table so
the children do not pull it away from the table. The hole is
suppose to be a connection between the box and the table. In
addition, I cut big holes on three sides of the box not facing
the table. (If you look inside the box, you can see that all the
loose flaps are taped down. That gives the box a little extra
strength and does not allow the medium to get under the inside
flaps. This apparatus creates two separate spaces. The spaces
are very different. The space in and around the table itself is
very open and bright. The space created by the box is closed
with less light. They a