《世界气温的分布》是七年级地理上册第三章第二节的内容。这一小节的第一课时是气温的变化,我所谈的是第二课时气温的分布。这个内容是本课的难点。如何运用高效的手段,轻松地突破这个难点,一直困扰着我。经过几轮的教学实践与揣摩,通过讲、听、评和反思总结,直到今年,我才感觉自己豁然开朗了。下面就这个问题,我将一些不太成熟的认识拿出来与大家分享。我认为这一课的难点可以分成两个部分去看。难点之一是等温线概念容易和等高线概念混淆。难点之二是气温的分布中垂直 “The distribution of world temperature” is the content of Chapter II, Section II of Geography Book on the 7th grade. The first lesson in this section is the change in temperature. What I am talking about is the distribution of temperature in the second lesson. This content is the difficulty of this lesson. How to use efficient means to easily break through this difficulty has been troubling me. After several rounds of teaching practice and try to figure out, through speaking, listening, commenting and reflection summary, until this year, I feel myself suddenly. Below on this issue, I will put some less mature understanding to share with you. I think the difficulty of this lesson can be divided into two parts to see. One of the difficulties is that the isotherm concept is easily confused with the contour concept. The second difficulty is the vertical distribution of temperature