建构智能课堂以“几何画板”聚焦“二次函数”图象问题

Building an Intelligent Classroom:Focusing on"Quadratic Function"Image Problems with"Sketchpad"

互联网信息技术的发展为学科教学建构了更为立体化、实践化、科学化的课堂环境,受教群体多维度、全视角地参与到教学过程中来。函数是初中阶段数学教学的重难点,常用图象法、解析式法等方法来解读函数模型,考查学生识图、读图、数据转换的能力。以二次函数教学为依托,分析“几何画板”软件在“线段和差”问题、“含参的函数最值”等方面的实例应用,并辅以图象绘制过程及解题思路,深入解读教育软件的实际应用意义。

The information network technology provides stronger professional support for subject teaching,constructs a three-dimensional,practical,and scientific classroom environment,and advocates students to participate in the process of knowledge analysis in a multi-dimensional and full perspective.Functions,as the most important and difficult point of junior high school mathematics,are designed to study the mapping relationship between independent and dependent variables.Common methods such as image method and analytical method are used to interpret the function model.Based the teaching of Quadratic Function,this paper analyzes the example applications of the"sketchpad"in the"line segment and difference"problem,and"value of the function with parameters".It attaches the image drawing process and problem-solving ideas to deepen the practical application significance of educational software.