奋战在小学科学教学一线的教师都有这样的感受:科学的课堂是充满问题的课堂,因而科学课教师在不断提高自己专业教学水平的同时还应具备丰富的科学文化知识,以满足教学的需要。久而久之,科学课教师自然就成了学生心目中的“百科全书”,什么都应该知道,所以不管是上课还是下课、不管是什么 The teachers who are fighting the frontline science teaching in elementary schools all have such feelings: the science classroom is a classroom full of problems, and therefore science teachers should have rich scientific and cultural knowledge while constantly improving their professional teaching level to meet the needs of teaching . As time passes, science teachers naturally become the students' encyclopedia, everything should know, so whether it is class or get out of class, no matter what