The earth season change educational apparatus according to the present invention comprises: a central cog wheel 100 fixed and fixed to a rotary shaft; At least one coupling gear (200) for gear-driving in contact with the central gear (100); And at least one idle gear (300) having the same number of teeth as the central gear (100), the lower end of the gear module being connected to the idler gear 300; A spherical earth model 400 coupled to an upper end of the model shaft 310; And a light source module 500 inserted and fixed in the center of rotation of the central gear 100 to irradiate the light source with the earth model 400.
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