Duck! Rabbit! by Amy Krouse Rosenthal and Tom Lichtenheld is a great children's book, filled with optical illusions. The reader has to decide if the drawing in the book is a duck or a rabbit. This is a lesson for children who do not know when to " let go" of an argument and this book will allow them to use their cognitive knowledge to determine how they see things.
I would read this book to kindergarten through second grade to test their perspectives and this will allow students to have a great open discussion as a class.
Lexile Level: AD20L