“科学教育信箱”栏目的编辑和专家:自从2015年贵栏目开设以来,我每期都会仔细阅读,受益良多,专家的细致分析帮我解决了很多科学教育当中的疑问和困惑,在此先表达我深深的感谢!这次来信,我想提出一个让我感到非常困惑的问题,希望能请专家帮忙解答。在科学探究活动中,动手操作之前教师一般都会先请幼儿进行猜想,意图是激发幼儿探究的兴趣,让他们学会主动 Editors and experts in Science Education Mailbox: Since the opening of your section in 2015, I have read every issue and benefited greatly. The careful analysis of experts helped me to solve many of the questions and puzzles in science education. First of all, I hereby express my deep appreciation for this letter. I would like to make a question that makes me feel very confused. I hope that experts can help to answer this question. In scientific inquiry activities, teachers usually ask young children to make conjectures before starting the operation. The intention is to stimulate young children’s interest in exploring so that they can learn to take the initiative