教学思路本课为本单元的起始课,要在学生对燃烧现象的观察及其有关经验的基础上,从孩子们的问题入手进行探究。本册教材的探究训练明线是事实与证据的训练,所以对孩子们的问题要从查阅资料、调查访问、观察实验三种途径引导他们搜集事实证据,解决他们提出的问 Teaching ideas This lesson is the beginning of this unit, to be based on the observation of students on the combustion phenomenon and its related experience, starting from the children’s problems to explore. The textbook training course of inquiry is a factual and evidence-based training, so we should guide them to collect factual evidence and solve the problems raised by them from the aspects of access to information, investigation and visit and observation and experiment