一、实验中层层递进,揭示事物本质特征,培养学生的思维能力学生认识事物的能力是由浅入深、循序渐进的,我在指导学生建立初步的“溶解”概念时,采用了分层次、层层递进的方法。首先以正确的实验操作和观察的方法为基础,以实验现象为剖析点,对实验过程中实验现象之间的差异进行分析,实验前部分主要是组织学生进行实验的操作和对实验现象进行细致的观察。后一部分是学生运用对比分析的方法逐渐深入地发 First, the gradual progress of the experiment, revealing the nature of things to develop students ’thinking ability Students’ ability to recognize things is from light to dark, step by step, I guide students in the establishment of the initial “dissolved ” concept, using a hierarchical , Progressive approach. First of all, with the correct experimental operation and observation method as the foundation, the experimental phenomenon as the analysis point, the differences between the experimental phenomena in the experiment process are analyzed. The first part of the experiment is mainly to organize the students to carry out the experimental operation and the experimental phenomenon to be meticulous Observation. The latter part of the students using comparative analysis method gradually in-depth hair