| In April 2018,the Ministry of Education promulgated the Education Informatization 2.0 Action Plan,which marks the entry of China into the era of Education Informatization 2.0.The new era emphasizes the renewal of educational concepts and the reform of educational modes.Under the background of the new era,it is a necessary condition for teachers’ professional development to strengthen the deep integration and innovation of information technology and subject teaching,and constantly improve their information-based teaching ability.Conic curve is an important part of analytic geometry,which is very important in the curriculum standards and plays a pivotal role in the college entrance examination.Meanwhile,it has strong abstractness and comprehensiveness,and has higher requirements for students’ comprehensive ability.As a widely recognized educational software,Geometric sketchpad has many advantages,such as simple operation,track tracking,accurate drawing and measurement,and geometric intuition,which is of great help to the optimization of conic teaching.Based on theoretical research and practical research,this study mainly includes the following parts :(1)Through reading literature,summarize the research status of geometric sketchpad in the field of mathematics teaching,and point out the significance of the application of geometric sketchpad in conic teaching;(2)Analyze and expound the theoretical basis of this study;(3)Through questionnaire survey and interview,the difficulties of students’ learning conic curve are found out;(4)Analyze the characteristics of the conic section and the advantages of the Geometric Sketchpad,puts forward the teaching strategy of Geometric Sketchpad and designs the teaching case of conic section;(5)Carry out quasi-experimental teaching practice,observe the effect of geometry sketchpad applied in conic teaching through statistical analysis of pre-test and post-test results and case teaching test results.(6)Based on teaching practice,this paper summarizes the influence of geometry sketchpad on conical curve teaching.This study makes a breakthrough from the three aspects of definition-equation-property,the second-level conclusion and the comprehensive problems,and puts forward the following strategies:(1)Ensure the instrumental nature of geometric sketchpad.(2)Geometry drawing cannot replace students’ drawing by themselves.(3)Focus on the explanation of ideas and blackboard writing,supplemented by visual display.(4)Reflect students’ dominant position and provide more time and opportunities for independent thinking.Through teaching practice and experimental data analysis,it is found that the intuitive display,accurate drawing and accurate calculation functions of Geometer’s Sketchpad can help to break through the explicit difficulties such as knowledge understanding and problem solving,and the implicit difficulties such as students’ thinking methods and emotional attitudes,but it has no significant effect on the improvement of computing ability.Students generally hold a positive attitude towards Geometric Sketchpad,and think that it is very helpful for them to learn mathematics. |
