VISUAL AID FOR GEOGRAPHY Russian patent published in 1994 - IPC

FIELD: school visual teaching aids. SUBSTANCE: indicator of inclination angle of axis of the Earth to its orbit includes one supplementary disc as a minimum simulating lateral section of the Earth which has rod common with first disc. Discs have slot passing through their center, reference dates are marked on discs. Model of orbit of the Earth is fabricated in the form of plane mounted on support which holds plane at level of center of discs of angle indicator. Stylized model of the Sun is put above plane. Plane carries not less than four reference dates corresponding to those on discs. EFFECT: easy-to-grasp approach to teaching. 4 dwg