2025年教学资料:2.3一元二次不等式
授课题目2.3一元二次不等式选用教材高等教育出版社《数学》(基础模块上册)授课时长3课时授课类型新授课教学提示本课从一元二次方程和二次函数之间的关系入手,引导学生借助一元二次方程的根和二次函数的图像求解一元二次不等式.教学目标能知道二次函数的图像,会分析一元二次方程的解与一元二次不等式的解集之间的关系,逐步提高直观想象和和逻辑推理等核心素养;能根据情况,选择求根公式法、因式分解法或配方法等求解一元二次方程,结合二次函数的图像解一元二次不等式,逐步提高数学运算、直观想象和逻辑推理等核心素养.教学重点二次函数、一元二次方程与一元二次不等式三者之间的联系,一元二次不等式的解法教学难点一元二次不等式...
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