Get your kids out of their seats and test their reaction time. This tried and proved lab acquaints the students with stimuli, reaction, reflex, impulses, and how they relate to the Central Nervous System. The lab is self-directed an highly motivational for each pair of kids experimenting with their reaction time. It becomes competitive as they strive to have the best time. Students will follow procedure instructions, record data, mathematically interpret data, and make conclusions about responses to stimuli. Eighteen questions review the important concepts and the vocabulary that is relevant. The lab could be used as a homework assignment as well as in class procedure. Answer key is included.