在科学课教学中,学生教了我们两招。在教学《昼夜的变化》时,要让学生知道地球是太阳系的行星,它围绕太阳旋转一周的时间是一年,同时它自己在不停旋转,自转一周的时间是一年,同时知道白天与黑夜是怎样形成的。在教学时,为了弄清上述情况,我们要求学生边观察三球仪,边进行讨论, In science teaching, students teach us two ways. When teaching “Diurnal Variation,” let the students know that the Earth is the planet of the solar system. It rotates around the sun for a year while it keeps spinning. It takes a year to rotate for a week, The dark night is how to form. In teaching, in order to clarify the above situation, we asked the students to observe the three ball instrument, while discussing,