Cut out these 3 optical illusions and use them as
bookmarks. You could laminate the bookmarks to protect them. If you do
not have a laminator, you can sandwich the bookmarks between two pieces of
clear strapping tape. Trim the edges of the tape and you will have a
strong bookmark.
The top and bottom bookmarks demonstrate the blind spot. Do you see a
triangle in the middle bookmark? Is it really there? For more
information about these illusions, go to the vision page.
Optical Illusion
Bookmarks 