Optical Illusions

Warm-up: Optical illusions can be categorized into 3 classes. What does NOT belong to these classes?

• physical
• physiological
• visual
• cognitive

Which word is in the picture?

• DOG
• DOT
• DUG
• COD

Are these lines straight?

• Only top and bottom ones
• All of them
• None of them

Which word is in the picture?

• TEST
• SEES
• TEAS
• SEAS

What animals do you see?

• Kitten
• Rabbit
• Giraffe
• Duck

Which word is in the picture?

• TAIL
• FALL
• FAIL
• TALL

What do you see in the picture?

• Two People
• Two swans
• Owl eyes
• Columns

Which word is in the picture?

• WALK
• WAIT
• WAKE
• WEPT

Still picture or GIF?

• Still picture

• GIF

Which word is in the picture?

• REAR
• WARE
• MARE
• NEAR