You begin by displaying three glasses on a wooden tray. A green silk is inside one the end glasses. You tell the childrenyou will make the silk jump to another glass. You put the tray behind you back and turn the whole thing around so the silk is now on the opposite end of the tray. You now repeat this to make the silk go back. At this point the kids are screaming that you just turned it around. Now you offer to make it jump to the middle glass. Now, right in front of their eyes the silk visually jumps to the middle glass!