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With power provided by a power source, the motor rotating shaft turns the gear and power is transmitted to the central shaft to rotate.

It is a structure in which the fourwheel car moves as power by the rotation of the central axis is transmitted to the front and rear axes.

While assembling, the students can observe how power works to rotate the rotation shaft and how it is transmitted to the front and rear shafts.

Basic understanding of the movement of fourwheel car: Students can build knowledge about

shaft transmission and gear transmission through the assembly.

Creativity development: The students can assemble other works based on forward and

backward movements and the work can be transformed into various shapes.