良好的开端是成功的一半,课堂教学亦如此。如果我们科学教师肯动脑筋,针对所教的内容和学生的心理特征,精心设计出既有吸引力,又有艺术性地导言就会达到伊始趣亦生的境界。这样学生就会很快进人角色,教师就可有效地实施教学内容。 A good start is halfway to success, as is classroom teaching. If our science teachers are willing to use their own brains and think about the content they teach and the psychological characteristics of their students, they will carefully devising the realm of both the beginning and the end of their life, both attractive and artistic. In this way, students will quickly enter the role of teachers can effectively implement the teaching content.