追溯数学思想 联系生活实际 突破教学瓶颈——以6个版本教材《分数的意义》为例

Trace Back to Mathematical Thinking,Link with the Reality of Life,and Break Through the Bottleneck of Teaching——Taking 6 Editions of Meaning of Fractions as an Example

《分数的意义》是承上启下的重难点。文章基于对6个版本的教材分析,强调从现实生活情境、几何直观、数系发展历史、数学知识前后联系等不同维度,深刻解读单位"1"、分数的意义、分数单位等关键知识点。建议小学教师从学科知识、教学能力、教学理念等方面促进自身专业成长与发展,以更好地胜任新课改理念下的小学数学教学。

The Meaning of Fractions isa key and is alsoa difficult link. Based on the analysis of the6versions of the textbook, the article emphasizes the different dimensions of the real life situation, geometric intuition,the history of the development of the numeral system, and the relationship between the mathematical knowledge, andso on, and deeply interprets the key knowledge such as the unit ＂1＂, the meaning of the fraction, the sub-multipleunit and so on. It is suggested that primary school teachers should promote their professional growth anddevelopment from subject knowledge, teaching ability and teaching ideas, so as to be better qualified for the primaryschool mathematics teaching under the concept of new curriculum reform.