![Sandlotscience.com: Plans for Missing Corner 3 D Cube [Pdf] Activity](http://content.lessonplanet.com/resources/thumbnails/411248/large/bwluav9tywdpy2symdiwmduymc01njg0lwltaxmzzy5qcgc.jpg?1589993095 "Sandlotscience.com: Plans for Missing Corner 3 D Cube [Pdf] Activity")
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Sandlotscience.com: Plans for Missing Corner 3 D Cube [Pdf]
A set of plans from Sandlotscience.com for building a cubic optical illusion in 3-D. Useful for demonstrations and projects.
Exploratorium
Exploratorium: Bird in a Cage
Have fun with this optical illusion. Learn about after images with this experiment.
Exploratorium
Exploratorium: Post Card Exhibits: Illusions & Other Surprises
At this site students can experiment with different illusions and even print them out to try on their friends.
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Vision rx.com: Optical Illusions
Provides an explanation of exactly what optical illusions are, and gives a few basic examples to illustrate the text.
Exploratorium
Exploratorium: Science Snacks: Squirming Palm
Create this optical illusion that incorporates what is known as the waterfall effect.
Ministry of Education and Universities of the Region of Murcia (Spain)
Ministerio De Educacion Y Ciencia: Ilusiones Opticas
In Spanish. This unit will show you the existence of optical illusions. It will make you think about perception.
Exploratorium
Exploratorium: Mona
An optical illusion created using Leonardo's well-known portrait of the Mona Lisa serves as source material for an exercise in perception.
Exploratorium
Exploratorium: Science Snacks: Parabolas
Recreate this optical illusion using two parabolic mirrors to make it appear like an object is in the center, when it is really just its image. This experiment requires special equipment which may need to be purchased.
Exploratorium
Exploratorium: Science Snacks: Touch the Spring
Explore the behavior of light as it reflects off a concave mirror in this optical illusion.
Other
Epsilones: Ilusiones Opticas Y Figures Imposibles
Observe many figures that look impossible to the eye and enjoy many of the optical illusions shown. [In Spanish]
Exploratorium
Exploratorium: Pajaro en Una Jaula
Two examples of optical illusions that demonstrate aspects of how we perceive color.
Other
Art of Anamorphosis
An interesting look at a type of optical illusion art that has been around for ages. You can find a full length description, examples, and downloadable software that will allow you to create your own digital version of this kind of art.
![Color Reversing Flag [Pdf] Activity](http://content.lessonplanet.com/resources/thumbnails/411250/large/bwluav9tywdpy2symdiwmduymc01njk3ltvrbwdycc5qcgc.jpg?1589993095 "Color Reversing Flag [Pdf] Activity")
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Color Reversing Flag [Pdf]
Use this picture to create a color reversing illusion. Great for projects and presentations.
Hanover College
Hanover College: Use of Visual Information in Art
This site from Hanover College gives a tutorial on issues of visual representation, such as depth, perspective, texture, shadow, illusion. Begins at an introductory level. Numerous pictures.
Curated OER
Science Kids: Science Images: Fraser Spiral Illusion, False Spiral
This optical illusion image is known as a Fraser spiral illusion, or false spiral. The black arcs appear to form a spiral when in fact they are a series of concentric circles.
Curated OER
Science Kids: Science Images: Orbison Illusion
This optical illusion, known as the Orbison illusion, gives the effect that the rectangle and inner square are distorted. This effect is caused by the horizontal V shaped lines.
Curated OER
Science Kids: Science Images: Face & Vase Illusion
This face and vase picture is a very common optical illusion. Do you a white vase or two identical black faces looking at each other?
Curated OER
Science Kids: Science Images: Life & Death Illusion
This black and white image is a very famous example of an optical illusion. Designed and drawn by C. Allan Gilbert, the name of the image is 'All is Vanity'. It represents both life and death where the meaning of existence is intertwined.
Curated OER
Science Kids: Science Images: Missing Shapes Illusion
These are two simple missing shape optical illusions shown in black and white. The existence of a white triangle can easily be imagined in the top image while your brain can also easily create the existence of a white sphere in the lower...
Curated OER
Science Kids: Science Images: Moving Wheels Illusion
This excellent optical illusion is confusing because when you look at it, it appears that the nine wheels are moving, when in fact they are not.
Curated OER
Science Kids: Science Images: Parallel Lines Cafe Wall Illusion
This famous optical illusion makes the parallel horizontal lines appear to be bent when in fact they are straight. It was originally noticed amongst the tiles of a cafe wall and can now be seen in architecture such as on a large building...
Curated OER
Science Kids: Science Images: Saxophone Illusion
Does this optical illusion show a man playing a saxophone or a woman's face? You be the judge.
Curated OER
Science Kids: Science Images: Vertical and Horizontal Line Length Illusion
This is a vertical and horizontal line length optical illusion. The vertical line that is part of the image on the left looks longer than the horizontal line but when it is checked with a ruler on the right image it is proved that they...
Exploratorium
Exploratorium: Science Snacks: Overlapping Spot
Do you know how to make a bright spot brighter? In this activity, your eyes will send conflicting information to the brain. See how you perceive what is on the paper.
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