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Touch Test

Humans feel textures by moving their fingers across a surface to stimulate touch receptors.
How it works
Touch different textured patches and match them to hidden texture patches.
Things to try or ask around the exhibit
Can you match up texture patches without brushing your fingers over the texture patches?
Background
When we feel the texture of something, we tend to move our fingers back and forth, so sensory nerves within the skin can be stimulated to detect the type of texture being investigated.
Finding the science in your world
Skin on your fingers and lips tends to have more nerve endings or touch receptors, which makes these areas more touch-sensitive. Your back has fewer receptors, so it it is less touch-sensitive.