Middle school students represent a wonderful target audience for introducing neurological concepts. The preteen years of the middle grades represent a time of incredible physical and mental development. Students in a seventh-grade classroom are experiencing dramatic physiological and psychological changes. Understanding the parts and functions of the brain and the nervous system gives middle grade students the opportunity to explore and understand the many physical and behavioral changes accompanying the onset of adolescence. To provide students with hands-on experiences to enhance their understanding of the human senses, the authors developed a series of sense modules to be used as part of a unit on the human nervous system. This article describes a somatosen-sation (sense of touch) module, which tests the sensitivity of various parts of the body. The somatosen-sation module can also be used to study the integumentary system. In the activity, an area of the body such as the back of a hand is touched by the ends of two toothpicks set apart at a specific distance. The test subject is then asked if both toothpick ends can be felt or if the two ends are perceived as a single point of contact. The distance between the toothpicks is varied and the test repeated to determine the sensitivity of the body part in question of two toothpicks set apart at a specific distance.