指                1. 你能根据图像小结一下二次函数有哪些性质吗？                                                                                                                                    

导                2.其中的哪条性质使得二次函数经常用来解决单变量的最优化问题？                                                                                                                            

知                1. 完全平方公式：(a±b) 2=a2±2ab+b2。                                                                                                                                        

识                2. 配方法解方程。                                                                                                                                                  

链                3. 平移的知识。                                                                                                                                                    

接                4. y=ax2、y=ax2±k的图像与性质。                                                                                                                                          

                 【细致地了解知识储备，有利于准确把握认知起点，这三部分的知识学习是下了大力气的，学生基本上做到了熟练。】                                                                                                      

流程           学 习  内 容                                                                                                                                                                                                                                                                                                                                                                                                                                                                            随堂札记