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日期和时刻是因人类生活和生产活动的需要而发展起来的。从古代人各自按照“日出而作、日入而息”进行活动,发展到近代1884年建立的国际标准时制,使时间的安排适应全球交往活动的需要。由于标准时的实用意义,普通中学学生学习这方面的知识是必要的。但是,在中学地理课中,标准时是教学上的一个难点,尤其是标准时的换算,初中低年级学生常感到糊摸不清。对于这个问题,应首先抓好基本概念的教学,在教学的过程中,要注意运用直观教具帮助学生加强对各种概念的理解。只
The date and time have been developed due to the needs of human life and productive activities. From ancient times, each of the ancient people carried out activities in accordance with the principle of “sunrise, daily gain and interest” and developed into an international standard system established in 1884 in modern times to adapt the arrangement of time to the needs of global exchanges. Due to the practical significance of the standard, ordinary secondary school students to learn this knowledge is necessary. However, in middle school geography class, the standard is a difficult teaching point, especially when the standard conversion, junior high school students often feel confused. For this issue, should first grasp the basic concepts of teaching, teaching process, we should pay attention to the use of visual aids to help students to strengthen understanding of various concepts. only