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How can you make one shade of gray look like two? By putting it against two different color backgrounds! This activity allows learners to perform this sleight of hand very easily. They will be startled by how different the same color looks when its background changes.
- Under 5 minutes
- 30 to 45 minutes
- $1 - $5 per student
- Ages 8 - 18
- Activity
- English
Quick Guide
Materials List (per student)
- 1 sheet white paper, 8 1/2" x 11" (or use white poster board if you want to make the snack a little more durable)
- 1 sheet black construction paper (size not critical, since you will be cutting it into strips)
- paper cutter (if available)
- ruler
- scissors
- glue stick
- 1 sheet transparency film for overhead projector, 8.5 in x 11 in
- gray electrical tape, 3/4 inches wide, or gray duct tape, 2 inches wide
- paper clips
Subjects
-
Life Sciences
-
Human Body
- The Brain and Nervous System
-
Human Senses and Perception
- Vision
- Perception
-
Human Body
-
Physical Sciences
- Vibration and Waves
-
Light and Optics
- Sunlight and Color
-
The Nature of Science
-
The Scientific Process
- Conducting Investigations
-
The Scientific Process
Audience
To use this activity, learners need to:
- see
- see color
- touch
Learning styles supported:
- Involves hands-on or lab activities
Other
This resource is part of:
Access Rights:
- Free access
By:
- Rathjen, Don
Rights:
- All rights reserved, Exploratorium, 2009