| 摘要 |
A teaching material using magnetic power is provided to let a user easily make words or sentences printed on the surfaces of molded materials by combining or separating the molded materials through attraction of magnets embedded in the molded materials. In a teaching material using magnetic power, the magnetic poles of magnets(8,9) inserted in a disc(6) equipped with a handle(5) having a bored hole are high or low at the side of the handle. The gap between the magnets and the number of the magnets are selectively changed. A knob(14) inserted with a magnet(13) is disposed at the underside of a non-magnetic disc(11) equipped with a ball unit(10) passing through the hole of the handle, and installed at the lower end of a rotary shaft(12) inserted with an iron piece(51). Both poles of magnets(4,4') installed at fixing pipes(3,3') disposed in each center of hemispheres(2,2') are set vertically. The outer wall of the magnets of automatic globes(A,A') printed with seas, lands, and maps are contacted to the upside of disc disposed on the magnet inserted to the disc having the handle by combining hemispheres(1,1') on the hemispheres. Rotating bodies placed on the upper ends of rotating bodies inserted with magnets and hemispheric surfaces of the rotating bodies contact to the upside of the non-magnetic disc disposed on the magnets by magnets.
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