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自然教学的内容是学生周围常见的自然事物和自然现象。它们是大自然中活生生的虫鱼鸟兽、千姿百态的花草树木、瞬息万变的电闪雷鸣和客观存在的岩石土壤等。这些内容在课堂上是无法识别“庐山真面目”的,虽然通过各种直观教具、模型或准备少量的实物材料可帮助学生认识,但不可避免地存在认识范围、认识程度的局限性,造成学生兴趣减弱,形成表象不实,不利于科学概念的建立,不利于学生创新精神和实践能力的培养。再如日月星辰天体运动的观察、水域和空气污染的考察、太阳高度的测量及风雨雪霜等自然现象的观测
The content of natural teaching is a common natural phenomenon and natural phenomenon around students. They are living insects and beasts in nature, flowers and trees in different poses, ever-changing lightning thunder and objective existence of rock soil. Although these contents can not identify “the true face of Lushan Mountain” in class, although they can help students to understand through a variety of visual aids, models or preparation of a small amount of physical materials, there are inevitably the limitations of awareness and understanding and the students' interest Weakening, the formation of false appearance is not conducive to the establishment of scientific concepts, is not conducive to the cultivation of students' innovative spirit and practical ability. Another example is the observation of astronomy movement of the sun and the moon, the investigation of water and air pollution, the measurement of the sun's altitude and the observation of natural phenomena such as wind, snow and frost