Reading and Interpreting Ladder Diagrams is an interactive, computer-based tutorial program. It consists of 19 lessons that teach students how to read and interpret ladder diagrams for industrial applications and HVACR appliances. Reading and Interpreting Ladder Diagrams is intended for those who have a rudimentary knowledge of basic electricity. The tutorial introduces the ladder diagram structure and major parts, then reviews the characteristics of a simple circuit. It discusses common ladder diagram symbols and their relationships within the ladder diagram. Each of the following lessons focuses on a specific industrial or HVACR system, describing its operation in relation to the ladder diagram. Animations display the complete ladder diagram sequence of operation. Features: Featured system components are introduced and matched to their ladder diagram symbol. Featured system operation is explained in relation to its ladder diagram. Animations with audio interpret the logic of the ladder diagram. Practice with feedback. Review Questions with feedback. Review questions that test for knowledge of the lesson objectives. Two final assessments with feedback. Final assessments include an option to print out the test questions and diagrams. Allows a student to learn at their own pace. Makes a good supplement to courses covering motors, motor controls, heating, air conditioning, and refrigeration. Provide plenty of practice reading and interpreting ladder diagrams. Strong pedagogy.