Instructional Research On "Observing The Object" From The Perspective Of "Three Abilities"

In order to fit in with the new needs of the economic and social development in the new era,China put forward a proposal to improve the core quality of students in2016,which has attracted great attention from the mathematics education.The General High School Mathematics Curriculum Standards(2017 Edition 2020Revision)proposes to guide students to possess the so-called "Three abilities",i.e.,the ability to observe the world with mathematics eyes,the ability to understand the world with mathematical thinking,and the ability to express the world with mathematical language.The "Three abilities" are not only the objective requirements for talents in today's world,but also the core guidance for mathematics teaching.In primary school mathematics teaching,it is especially necessary to pay attention to the cultivation of students' "Three abilities" ability."Observing the objects" is the first step in cultivating students to form the concept of space geometry and an important foundation for learning geometry.However,the teaching effect of "Observing the objects" for students in the past is always unsatisfactory,and there is still much room for improvement.Therefore,in order to enhance students' mastery of this part of the content,this work will try to explore the teaching of "Observing the objects" from the perspective of the "Three abilities".In this work,the literature research method was used,to sort out the related research on the "Three abilities" and "Observing the objects",to find the breakthrough point,and to determine the research problem.According to the form of expression of "Three abilities" in "observing objects",the teaching value of "Observing the objects" was analyzed from the perspective of "Three abilities".In order to grasp the realities of situation on the teaching of "observation objects" from the perspective of the "Three abilities",the text analysis method is used to analyze the textbooks and teachers' lesson plans.The "Observing the objects(1)" taught by the two teachers were observed in the classroom through the classroom observation method and after-school interviews were conducted.Finally,by choosing "Observing the objects(1)" as the teaching case and combining the "Three abilities" thought,various teaching strategies were proposed.The results of the investigation show that students have difficulty in identifying the left and right sides of the view,and the observation methods are still not well understood.Students cannot accurately describe the characteristics of the object,and the cooperation between students is difficult.This indicates that the current level of the "Three abilities" of the students is weak,and the room for improvement is still large;Meanwhile,the teachers' educational philosophy for the "Three abilities" have not been updated in time.Based on the analysis of the current situation and combined with the manifestations of the "Three abilities" in the "Observed the objects",the corresponding teaching strategies are proposed form the five aspects: "teacher's educational philosophy","mathematical vision","mathematical thinking",and "mathematical language",respectively.In order to design and analyze the instructional strategy,"Observing the object(1)" is selected according to the teaching strategy.