These supplemental units contain four laboratory exercises that can be used to enhance the labs in "Physics for the Technologies." The four units (one mechanical, two thermal, and one electrical) are designed to enhance labs in presenting specific concepts. Each unit can be used as an example of how the concepts behind the theory apply to real-world situations. Introductory materials list the units in which they can be used as additional exercises, offer suggestions for presenting the supplementary units, list necessary equipment, and offer two options for obtaining equipment the high school may not have. Each unit consists of these components: introduction (lab objective, learning path, and main idea); teaching path with list of resource materials, class goals, and class activities; discussion (information); and laboratory (equipment, procedures, and additional exercises). Topics are as follows: mechanical bending stress, measuring heat flow using an electrical analog, electrical energy storage in capacitors, and measuring thermal power. (YLB)