课堂的有效性是指在课程改革的背景下,教师吸收了某种先进的教学理念,在这种理念的指导下,经过了教师一段时间的课堂教学实验,实践证明课堂效率和教学质量的确取得了较大的发展和进步。新的课程改革在我国已经实施多年,新的教学理念已经深入到每一个教师的心中,但是随着高中生物内容的增加且课时颇显紧张的情况下,如何提高生物课堂的有效性便成了生物教师最为关心的问题。经过了多年的实践经验和多位教师的心得,我认为高中生 The validity of the class means that under the background of the curriculum reform, the teacher absorbs some advanced teaching idea. Under the guidance of this concept, after a period of teachers’ classroom teaching experiments, the practice proves that the efficiency of the classroom and the quality of the teaching are indeed obtained A larger development and progress. The new curriculum reform has been implemented for many years in our country. The new teaching concept has been deeply touched to the minds of every teacher. However, with the increase of biological content in senior high school and the tense hours, the effectiveness of the biology class has become Biology teachers are most concerned about the issue. After many years of practical experience and experience of many teachers, I think high school students