建构主义的学习观强调学生学习的主动建构性。因此,教师要让课堂教学充满活力,使学生真正得到发展,就要注意创设真实、复杂、具有挑战性、开放性的问题情境,诱发、驱动并支撑学生的思考与探索,达到促进学生主动建构知识的目的。因此,有效的问题情境应该具备以下四性: Constructivist learning emphasizes the initiative construction of student learning. Therefore, if teachers want to make classroom teaching full of vitality so that students can truly develop, it is necessary to pay attention to creating real, complex, challenging and open-ended problem situations to induce, drive and support students ’thinking and exploration so as to promote students’ initiative construction The purpose of knowledge. Therefore, effective problem situations should have the following four characteristics: