This Is Cool

A student tests heat/cold sensitivity by dipping a finger into containers of cold and warm water. Human sensory systems are highly adaptable. This activity demonstrates the process of sensory adaptation. Students investigate how the perception of temperature changes under three separate conditions. They also relate the process of sensory adaptation to homeostasis.

Cool Tool

Using pencils, students explore touch and temperature sensitivity by finding cool receptors on their skin. Optional: Display Frames may be purchased at or you may call to order them at 1-800-572-2194

Suggested keywords to use when describing your experiment and to find more information on this subject include: primary sensory cortex, cortical homunculus, thermoreceptor, and brain topographic map.

Blind Spot

Students move a test strip through their field of vision and determine at which position one of the symbols disappears, thus identifying their blind spot.

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