| Mathematical unit teaching design grasps the logical development sequence of mathematical knowledge as a whole,the presentation sequence of textbook content and the cognitive psychological sequence of students,which is an important starting point and an effective way to cultivate students’ core mathematical literacy,and has been valued by front-line teachers and education experts.The preliminary solid geometry occupies a very important position in high school.The preliminary solid geometry contains a variety of mathematical core literacy,which is a good carrier for the development of students’ logical reasoning thinking.Therefore,thispaper will carry out the research on the teaching design of the "Preliminary Solid Geometry" unit from the following aspects.In this paper,firstly,by referring to the relevant literature,to understand the research status of unit teaching at home and abroad and the preliminary unit teaching design of solid geometry.Through the visual analysis of the retrieval results of How Net,the necessity of this study is established in the form of a review of the reviewed literature.Secondly,define the concept of mathematics unit instructional design,so as to further determine the theoretical basis of this research.Then it analyzes the elements of the teaching design of the preliminary unit of solid geometry.Among them,the analysis of learning situation is an essential content of teaching design.The analysis of learning situation in this paper adopts the form of questionnaire,and uses SPSS software to analyze the reliability and validity to ensure the reliability of the questionnaire data.According to the analysis and optimization of the articles about the practical steps of unit teaching,the key link of the unit teaching design of solid geometry is established.Finally,the specific teaching design with the theme of "parallel" in the preliminary solid geometry is given.Through the study of the teaching design of the preliminary unit of stereo geometry,the research methods and research paths of the preliminary unit of stereo geometry are more clearly defined.In the straight line and plane parallel units,students have experienced the whole process of "definition-judgment-nature-application",and in the process of research,students are guided to explore the internal relationship between knowledge and knowledge,so as to pay more attention to the initial essential content of three-dimensional geometry and the mathematical ideas contained therein,reflecting the concept of implementing core literacy. |