科学课上,学生的学习是在一定的情境下进行的。构建适切有效的教学情境,是引发学生主动思维,并促成学生持续深入探究的关键。设置有效的教学情境,需要了解学生的思维状态和动向,让学生思维可视化,并在此基础上即时调整或改进情境设置,使教学情境更好地服务于学生的思维发展。本文试以科学课上常见的教学情境为例,谈谈自己的一 In the science class, the student’s learning is carried out under certain circumstances. Building a proper and effective teaching situation is the key to trigger students’ initiative thinking and make students continue to explore in depth. To set up an effective teaching situation, students need to understand the state of mind and trends and visualize the students ’thinking. On the basis of this, they can adjust or improve situational settings on the fly, so that the teaching situation can better serve the students’ thinking development. This article tries to take the common teaching situation in the science class as an example to talk about one’s own