| 摘要 |
The present invention relates to a learning tool for observing lunar motion. The learning tool comprises: a cylindrical body (100) in which a first pulley (110) having a magnet body (111) is fixed to the top surface center thereof, the top is opened, and a stepped projection (120) is formed on the inner circumferential surface; a disc body (200) in which a second pulley (210) coupled with the first pulley (110) is equipped, a third pulley (220) receiving a rotary force of the second pulley (210) is equipped, the shaft (222) of the third pulley (220) from among the second pulley (210) and third pulley (220) protrudes, the outer circumference thereof is settled and covered on the stepped projection (120) at the top of the cylindrical body (100), and a magnet body (240) is equipped on the top surface circumference thereof; and a moon model (300) which is coupled with the shaft of the third pulley. A user can easily understand lunar phase and revolution changes and know how the shape of the moon is changed from the perspective of the earth. By means of the rotation of the disc, an observer on the earth can easily see and recognize changes in lunar phases so that learning effects can be doubled. |
