This is by far one of my FAVORITE days to teach!
Lecture can be so dry on the senses. Make this topic pop with a completely wacky experiment. Students test their sense of vision by walking blindfolded in the hallways with a partner. There are certain tasks to accomplish in a specific amount of time on the handout. All you need are cut up tee shirts as blind folds. Super easy. Great day. Make an impression!
Then, host a discussion on the experimental findings. Compare and contrast vision with the vestibular sense and the kinesthetic sense.