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函数的依从关系是中学数学中的一个重要概念,可以引导学生由静止的观点发展为变动的观点。数形结合的最好教学方式是运用图象,函数图象的教学在中学数学教学中占有重要的地位。学生学好函数图象不仅是学习了有关数学知识和技能,更重要的是培养学生认识到自然界的各种现象是相互联系、不断变化的。函数关系式中的每个文字的变化所引起的图象变化应使学生清晰、系统的掌握。限于课堂教学的时间,每节课仅能解决一、二个类型。因此有必要加强复习
The function dependency is an important concept in middle school mathematics. It can guide students from the static point of view into the changing point of view. The best teaching method of digital-graphic integration is the use of images. Functional image teaching plays an important role in mathematics teaching in middle schools. Students learn functional images not only by learning about mathematics knowledge and skills, but more importantly by cultivating students to recognize that various phenomena in the natural world are interrelated and constantly changing. The change in the image caused by the change of each character in the functional relationship should enable the students to grasp clearly and systematically. Due to classroom teaching time, only one or two types can be solved in each class. Therefore it is necessary to strengthen review