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画图、思考过程是将客观事物在头脑中的表象外显为具有物理特征的过程,并通过对图的观察和构绘来替代对实际物体的操作。那么,在物理教学中如何培养学生的画图、思考能力?一、表象反映成图的能力在语言文字、表象、数学之间的信息转换过程中,图充当表象的记录符号,图使表象更加清晰具体,记载的信息容量更大,从而促进信息的加工。例1如图1所示,一不可伸长的光滑轻绳,其左端固定于O点,右端跨过位于O’点的固定光滑轴悬挂一质量为M的物体;OO’段水平,长度为L;绳子上
Drawing, thinking process is the appearance of the objective things in the mind as a manifestation of the physical characteristics of the process, and through the observation and rendering of the figure to replace the actual operation of the object. So, how to cultivate students’ drawing and thinking ability in physics teaching? First, the ability of representation reflects the mapping In the process of information conversion between language, appearance and mathematics, the figure serves as the recording symbol of the appearance and the figure makes the appearance more clear Specifically, the volume of information recorded is greater, thereby facilitating the processing of information. Example 1 As shown in Fig. 1, a non-stretchable smooth light rope has its left end fixed at point O and the right end suspended by a fixed smooth shaft at point O ’with a mass M; the horizontal section OO’ has a length of L; on the rope