摘要
“算术平均数”是中学数学中的基本概念,并为社会大众广泛使用.但是,要正确、深入地理解和运用“算术平均数”并不容易.“算术平均数”概念具有4个理解水平,分别是:本义性理解水平,特异性理解水平,加权性理解水平和随机变量分布理解水平.
The Conception ＂Arithmetic Average＂, which had been brought into wide use, was the basic concept in high school mathematics. However, it was not easy to comprehend and used this conception accurately and profoundly. This essay, which combined a test, from the four comprehension levels of original meaning, variability, added weights to change quantity, and the mathematical expectation of a random variable. The author attempted to analyze the students＇ current situation of grasping this conception as to provide reference for teaching.
出处
《数学教育学报》
北大核心
2006年第3期35-37,共3页
Journal of Mathematics Education
关键词
算术平均数
概念
理解
水平
测试
arithmetic average
conception
perception
levels
test
teaching
