计                                  ★观察课本第97页“做一做”，第101页的各个习题，了解题意。利用这些题目作为素材，自主开一家“折扣商店”。                                                                                                                                         ①观察大黑板展演成果，快速查找问题并予以修正；                                                                                               全班互动型展示                                                                                                                

·                                  温馨小提示                                                                                                                                                                                        ②自主修正问题，组内互查演练成果；                                                                                                     ①演练问题大搜索；                                                                                                              

自                                  ①你的打折方案是否最具创意！                                                                                                                                                                               ③交流新思路、新解法、新拓展。                                                                                                       ②问题纠错后的自主拓展。                                                                                                            

我                                  ②每组指派一名代表上大黑板自主板演，其他同学完成在导学稿右边的随堂笔记上。