This workbook introduces students in Grades 5–9 to the internal structure of a computer and the principles behind its operation. Learners investigate processors, memory, storage, and peripheral devices while connecting theoretical concepts to everyday technology. Included in this unit: Introductory reading on hardware components and data flow Group puzzle covering CPU, RAM, storage, motherboard, and I/O devices Core task: disassemble an old PC or laptop and document each part Glossary of ke