自然第一册“怎样测定太阳的高度”一课,要求儿童了解太阳的高度的概念,掌握测量太阳高度的方法。限于儿童的空间思维水平和已有的知识,这一课的教与学都出现了较大的困难。太阳的高度这一概念是本课开篇的第一个难点。怎样突破它呢?我是从以下两方面引导儿童学习的:一、太阳在天空中的位置为什么要用太阳的高度表示?教师问:“从早到晚,太 The first volume, “How to Determine the Height of the Sun”, requires children to understand the concept of the height of the sun and how to measure the height of the sun. Limited to children's level of spatial thinking and existing knowledge, this lesson teaching and learning have appeared more difficult. The concept of the height of the sun is the first difficulty in the beginning of this lesson. How to break it? I guide children from the following two aspects: First, the sun's position in the sky Why use the sun's height? Teacher asked: "From morning till night, too