This fourth of 10 blocks of student and teacher materials for a secondary/postsecondary level course in electronic principles comprises one of a number of military-developed curriculum packages selected for adaptation to vocational instruction and curriculum development in a civilian setting. Prerequisites are the previous blocks. This block on solid state principles contains five modules covering 72 hours of instruction on PN junctions and diodes (12 hours), transistors (12), amplifier principles (22), troubleshooting solid state amplifiers (12), and selected solid state devices (14). Printed instructor materials include a plan of instruction detailing the units of instruction, duration of the lessons, criterion objectives, and support materials needed. Student materials include a student text; five guidance packages containing objectives, assignments, and review exercises for each module; and a comprehensive programmed text on solid state devices. A digest of the modules in the block is provided for students who need only to review the material. Designed for self- or group-paced instruction, the material can be adapted for individualized instruction. Additional print and audiovisual materials are recommended but not provided. (YLB)