＂估算＂类竞赛题解法初探四川省綦江县古南中学赵小平近几年初中物理竞赛中出现一类估算的问题，据笔者调查此类题得分率最低，其原因是学生不知怎样解．现结合具体问题作一探讨二一、联系实际估算例１（１９９５年全国初中应用物理知识竞赛题）若把掉在地面上的物理课本... “Estimate” class game problem solution method Zhaojiang County, Sichuan Province Jiangnan Middle School in the junior high school physics competition in the emergence of a class of estimation problems, according to the author’s survey of such questions, the lowest score, the reason is that students do not know how to solve. We will now discuss the specific issues with a discussion of the first two, contact the actual estimation of Example 1 (1995 national junior high school applied physics knowledge contest title) if the physics textbooks dropped on the ground ...