学习目标：                                                                                                                                                                                                                               检测指标：                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        

1. 进一步认识长方体和正方体的特征；同时强化空间观念，在脑中构建立体图形与展开图形的对应关系。                                                                                                                                                                                      1. 我会说出长方体和正方体的特征及点、棱、面之间的关系；能根据展开图想象出相对应的立体图形来，反之亦然。