初中科学是一门开放性课程,新课标的改革,面临着教学手段的相对落后,学生学习积极性不高,学生成绩提高受限制等多重问题,这要求科学教师在教学理念和教学行为要求方面都进行改革,在教学中只有适应这些变化,才能提高教学的有效性,本文从有效地教学目标、有效地教学情境、科学有效地教学策略三个方面来谈一下初中教学的有效性。 Junior high school science is an open curriculum, the reform of the new curriculum, facing the relative backwardness of teaching methods, students ’learning enthusiasm is not high, the students’ performance is limited and so on multiple issues, which require science teachers in teaching philosophy and teaching behavior requirements are Only by adapting these changes in teaching can we improve the effectiveness of teaching. This article discusses the effectiveness of junior high school teaching from three aspects: effective teaching objectives, effective teaching situations and scientifically and effectively teaching strategies.