Tomorrow is the king of the invention 18b Meet the various scientific theories in the textbooks through the use of shuttlecock supplies, angle-adjustable shuttlecocks, table tennis hitting machines, and melody racquets. b [18] Invention Game is a game in which the nature of the friction force, the shuttlecock feeder using the baseball strike machine, the table tennis strike machine applying the line tracer, the melody racket using the electrostatic sensor to detect the change of the elasticity property and the current, In addition to elementary science textbooks, "5th grade, 2nd semester" The structure and function of our body The role of the various agencies that make up our body in the unit, 6th grade 2nd semester? In the section of "Electric action", the core principles in the textbooks which have to know the kinds of conductors and the flow of electric current have to be learned. In the Exploring at home section, you will learn about the principles of breathing exercises through a respiratory organ model. In Inventions that Changed the World, we learn about povidone iodine disinfectant, and in Invention Diary, we learn about the process from invention idea of angle adjustable shuttlecock to production and invention verification. . In the Core Notes, you can learn about bones and muscles.