A Study on GeoGebra-Based Large Unit Instructional Design in High School Mathematics—Taking Conic Curve as an Example

《普通高中数学课程标准(2017年版2020年修订)》强调了教学要以学科大概念为中心培育核心素养，同时，新课标指出：“要重视信息技术与数学课程内容的有机整合。”大单元教学设计注重对大单元内容整体思考，注重前后知识的整合，更好地帮助学生完善知识结构。随着信息技术的发展，GeoGebra软件以其动态演示形象化的亮点和与数学高精度的要求相契合的优势，在数学教学、研究、教学评价中发挥着越来越重要的作用。而圆锥曲线作为高考的重要内容，难度较大，通过应用GeoGebra软件可以让圆锥曲线的教学过程变得可视化、直观化。因此，本文研究了在大单元教学模式下，利用GeoGebra软件辅助高中圆锥曲线教学的优势，提出在圆锥曲线教学实践中的针对性建议。The General High School Mathematics Curriculum Standard (2017 Edition Revised in 2020) emphasizes that teaching should be centered on the subject’s big concepts to cultivate core literacy, and at the same time, the new curriculum standard points out that “we should pay attention to the organic integration of information technology and the content of the mathematics curriculum.” The design of large-unit teaching focuses on thinking about the content of the large unit as a whole, emphasizing the integration of the knowledge before and after, and better helping students to improve their knowledge structure. With the development of information technology, GeoGebra software plays an increasingly important role in mathematics teaching, research, and teaching evaluation with the highlights of its dynamic demonstration visualization and the advantages of matching the requirements of high precision in mathematics. And conic curve, as an important content of the college entrance examination, is difficult, and the teaching process of conic curve can be visualized and intuitive by applying GeoGebra software. Therefore, this paper investigates the advantages of using GGB software to assist the teaching of high school conic curves under the large-unit teaching mode, and puts forward targeted suggestions in the practice of teaching conic curves.