在我们的日常生活中,常常需要进行各种估算.物理课程就是要让学生学习初步的物理知识与技能,经历基本的科学探究过程,它是以提高全体学生的科学素质、促进学生的全面发展为主要目标的自然科学基础课程.在物理学习中,学会对常见的物理量进行估算的方法是十分必要的. In our daily life, often need to make a variety of estimates.Physical curriculum is to enable students to learn the initial physical knowledge and skills, through the basic process of scientific inquiry, it is to improve the scientific quality of all students, and promote the all-round development of students As the main objective of the basic course of natural science.In the study of physics, to learn the method of estimating the common physical quantities is very necessary.