高中地理(必修)上册第一二两章,有一部分知识点比较抽象,如地方时、地球自转的周期、地球上物体的偏转、大气的运动等;加之有些同学的空间想象能力较差,如果单独凭借一些平面图示,很可能收不到预想的教学效果。所以,用多种方法突破这些教学难点,就显得尤为必要。 一、直观教具是培养学生空间思维能力、想象能力的重要手段 在讲述地球的运动时,我尽可能做到多用直观教具。如地球自转时“昼夜半球仪”的使用,公转时“三球仪”的使用,还有“天球仪”、“经纬仪” High school geography (required) The first and second chapters of the first volume, some of which are more abstract, such as the local time, the cycle of the earth’s rotation, the deflection of objects on the earth, the movement of the atmosphere, etc.; in addition, some students have poor spatial imagination ability. With some graphic illustrations alone, it is very likely that you will not receive the expected results. Therefore, it is particularly necessary to break through these teaching difficulties in a variety of ways. First, visual aids are an important means of cultivating students’ spatial thinking and imagination. When telling about the movement of the earth, I try to use as many visual aids as possible. For example, when the earth rotates, the use of the “dome hemisphere instrument”, the use of the “three ball instruments” during the revolution, and the “sky ball instrument” and “theodolite”