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初二同学在学习物理的过程中,对物理量单位的掌握常常感到有些困难,对所问的物理量的单位回答不够准确,有的同学把一些物理量的单位相混淆,出现了张冠李戴的现象.例如,有的同学把压强的单位说成牛顿,把千克当成力的单位;有的同学由于
During the course of studying physics, classmates of the 2nd graders often found it difficult to master the physical units. The units responding to the physical quantities asked were not accurate enough. Some students confused some units of physical quantities and they appeared to be in a situation of Zhang Guan and Li Dai. Some students described pressure units as Newtons and kilograms as units of force; some students