This document discusses optical illusions and the art style known as Op Art. It provides examples of optical illusions, describes some famous Op Artists like Bridget Riley and Victor Vasarely, and examines key elements and principles of Op Art like lines, shapes, patterns, and movement. It also presents options for a student art project involving creating Geometric or Organic Op Art using colored pencils and including optical illusions and at least three colors.

1. What do you notice about these two
piecesofart?
Let’s watch some illusions:
https://www.youtube.com/watch?v=EoUfT_UR8Gc#t=172

2. Op Art
■ Stands for“Optical
Art”:art that
creates an optical
illusion
■ Optical illusion:an
image that tricks
your eyesinto
seeing something
that’snot there
Example ofan optical illusion:
The bar isthe exact same gray all
the way across.

3. More optical illusions
FraserSpiral I
llusion:This looks like a
spiral, but it is actually concentric
circles (circles inside of circles, all with
the same center).
Hermann Grid I
llusion:Black
dots appear and disappear
very quickly at the
intersections.

4. Op Art:
Do you remember what it stands for?
■ First started, and most
popular, in the 1960s
■ Also known as:
□ Geometric abstraction
□ Hard-edge abstraction
□ Perceptual abstraction
Bridget Riley. “Movement in Squares.” 1961.

5. What isOp Art all about?
■ Optical illusions
■ Eye-brain
connection
■ Elements of art:
□ Line
□ Shape
□ space
■ Principles of design:
□ Pattern
□ Movement
Whatisthe optical illusion in this
piece? Howdid the artist,
BridgetR
iley, create it?

6. FamousOp Artist:Bridget Riley
Born April 24th, 1931 in
London, England.
Cataract 3, 1967.

7. More of Bridget Riley’s Art
Loss, 1964.
Blaze 3, 1963.

8. Famous Op Artist:Victor Vasarely
Born in 1906 in Hungary, but
lived most of his life in Paris,
France;died in 1997.
He is often claimed as the
father of Op Art.

9. More of Victor Vasarely’sArt
Ambigu-B, 1970.
Cheyt-M

10. Vanishing Point: The point at
which a thing disappears or ceases
■.to exist
Vanishing Point

11. Vanishing Points?

12. OPTIO
N 1: Geometric Op Art
created by students

13. More student work
* Where
are the
vanishing
points?

22. OPTION 2: ORGANIC OP ART
*Free flowing wavy lines. Less straight and rigid.

25. These are just ideas! You will have to include at
least 3 colors.

27. Option 3: You can also combine Geometric with Organic!

29. -You will be using colored pencils to
complete this project!
NO! Scribbly lines and not bold!
YES! Bold colors – Press hard with
colored pencil!

30. To review, Op ArtProject:
■ Create original
Geometric OR
Organic Design, OR
a combination of
both.
■ Use colored pencils
& include at least 3
colors.
■ Must be an illusion!

31. Your 1st Practice Technique: Sphere