我们都知道教师认真备课是提高教学质量的秘密武器,教学效果的好坏与教师对教学的准备紧密关联,教师课前做好充分的问题预设,那么实施教学时就会游刃有余,教学效果就会取得或超出预期的好。新课改以来提倡的一个重要教学理念就是小组合作学习,合作探究成为一种最为有效的教学模式,在课堂教学中发挥重要作用。 We all know that teachers ’careful lesson planning is a secret weapon to improve the quality of teaching. The quality of teaching effect is closely linked with teachers’ preparation for teaching. Pre-class teachers do a full problem precondition, so the implementation of teaching will be easy, teaching effectiveness Will achieve or exceed expectations. An important teaching concept advocated by the new curriculum reform is that group cooperation learning and cooperation exploration become one of the most effective teaching modes and play an important role in classroom teaching.