At the first half in this article, the present author reviewed how has been developed the treaty within the ”Course of Studies” for ”Magnet” as the subject matter at lower grades (Grade 1~3) in the elementary school sciences. In the latter half, his special comments were made how to treat those subject matters better. He emphasized that the repulsive force which appears between the like-poles of magnets should be noticed much more than the attraction inbetween the un-like-poles.