问题情境是学生进行探究性学习的前提。为了实现有意义的探究,展开有效的教学,教师往往把学生要学习的内容转化为一个个问题情境。一个好的问题情境,往往能够激发学生强烈的问题意识和探究动机,引发学生积极思考,同时又为新知的探究提供学习材料。因此,情境的创设是预设时非常关键的一步。如何让情景创设更有效呢? Problem situation is the premise of inquiry learning for students. In order to realize meaningful inquiry and carry out effective teaching, teachers often turn what students want to learn into a single problem situation. A good problem situation often inspires students ’strong problem awareness and motivation to explore, arouses students’ positive thinking and at the same time provides learning materials for the inquiry of new knowledge. Therefore, the creation of situations is a crucial step in the process of default. How to make scene creation more effective?