| It is a hot issue in current education to cultivate students’ subject core literacy.Spatial imagination is one of the core literacy in mathematics teaching.The cultivation of spatial imagination permeates almost every stage of compulsory education and high school mathematics learning and teaching,and plays an important role in improving the mathematical thinking ability of high school students.At the same time,it is also one of the key and difficult contents in the teaching of solid geometry in senior high school,and one of the important bottlenecks restricting the development of students’core literacy.In my teaching practice,I feel that there are some problems in the teaching process of solid geometry,and students are generally confused and laborious about the content of this section.The new curriculum standard textbooks have changed greatly in the arrangement of the contents of solid geometry.The new curriculum reform and examination reform have put forward new requirements for the teaching of solid geometry.The development of multimedia technology and the popularization of school teaching hardware equipment have brought new models to the teaching of solid geometry.Under these circumstances,it is meaningful for us to explore ways and means to cultivate and improve the spatial imagination ability of senior high school students.This article mainly elaborates the current situation and problems of the cultivation of spatial imagination ability,the concept and development process of spatial imagination ability and core literacy,the strategies of cultivating and improving high school students’spatial imagination ability and some practices in practice.In terms of ways and means to cultivate high school students’spatial imagination ability,I think the most important thing is to strengthen intuitive perception and imagination,to strengthen the understanding of intuitive drawing steps and the application of skills,to improve the transformation ability of mathematical language such as words,symbols,graphics,and the auxiliary use of multimedia technology. |