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六年制小学自然课本第二册中的课文《怎样认识物体(三)——土壤》,教学重点是土壤的主要成分。我在本课教学中,优化教学设计,指导学生进行土壤成分分析,达到了理想的教学效果。一、野外观察、取样野外观察能使学生认识土壤在自然状态下的许多特点,为土壤成分分析积累感性资料。观察前教师要做二方面的工作,一是教师要对学校内外的土壤进行调查、取样分析,看用哪块地的土壤实验效果
The text “How to Understand Objects (III) - Soil,” in the second volume of the six-year primary textbook of nature, focuses on soil as the main component. I am teaching in this course, optimizing teaching design, guiding students to soil composition analysis, to achieve the ideal teaching effect. First, the field observation, sampling field observation enables students to recognize many of the characteristics of the soil in the natural state, accumulation of sensory data for soil composition analysis. Before the observation, teachers should do two tasks. First, teachers should investigate the soil inside and outside the school, take a sample analysis and see which piece of soil is used to test the effect