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Grand Illusions

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Visit this site: http://www.grand-illusions.com/
Author:Hendrik Ball
Description: A "site for the enquiring mind, with optical illusions, scientific toys, visual effects, and even a little magic." Includes a number of feature articles on vision, photography, mirrors, optical toys, movies, etc. See, in particular, the geometrical optical illusion, also known as the "hole in the triangle" bamboozlement puzzle; and the Monty Hall problem (includes a simulation).
Levels: Middle School (6-8), High School (9-12), College
Languages: English
Resource Types: Graphics, Recreations
Math Topics: Euclidean Plane Geometry, Triangles and Other Polygons

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