布卢姆说过:“没有预料不到的成果,教学也就不成为一种艺术。”其实,令教师们头痛的课堂“意外”也是一种教学资源,只要我们及时捕捉那些无法预见的教学因素、教学情景等信息,利用课堂“意外”这一可生成的资源开展教学,“意外”也能成为课堂教学的亮点。怎样才能有效地利用课堂“意外”呢?反而用之课堂上学生“即兴创造”的随机事件会不同程度地影响教学进程,可是如果处理得当,反而用之,让其成为教学资源,则会弥补或推进教学。例如,在教学《时、分、秒》一 Bloom said: “Without unexpected results, teaching is not an art.” “In fact, the” headache “class for teachers is also a teaching resource as long as we capture those in time Unpredictable teaching factors, teaching situations and other information, the use of classroom ”Accident “ This can generate resources for teaching, ”Accident “ can become the highlight of classroom teaching. How can we effectively use the classroom ”Accident “? Instead, students in the classroom ”improvisation “ random events will affect the teaching process to varying degrees, but if properly handled, but use it to become a teaching resource , It will make up or promote teaching. For example, teaching ”hours, minutes and seconds" one