建构主义理论认为,学习是学生积极地对新知识进行主动构建的过程。学习应该与某种具体的情境进行联系,这样才能有效地发挥生活经验及原有认知对新知识的同化和迁移作用。化学是一门趣味性很强的学科,但现在一些教师在初中化学课堂教学中,往往只是一味地给学生讲解相应的化学知识,而不注重学生学习化学知识的原有认知起点,从而导致了初中生化学学习的低效化。在初中化学课堂教学中,教师要善于根据教学内容为初中生创设有 Constructivism holds that learning is a process by which students actively construct new knowledge. Learning should be linked with a specific situation, so as to effectively exert the experience of life and the assimilation and transfer of new knowledge by the original cognition. Chemistry is a highly interesting subject, but now some teachers in junior high school chemistry classroom teaching, often just to explain to students the corresponding chemical knowledge, rather than focus on students to learn the original knowledge of chemical starting point, resulting in Junior high school chemistry learning inefficient. In junior high school chemistry classroom teaching, teachers should be good at creating junior high school students according to the teaching content