课堂教学是一个动态发展的过程,这个过程是在备教材、备学生后形成教学预设,而后执行预设的过程。它既有规律可循,又有灵活的生成性和不可预测性。有效的教学应该是课前的预设与课中生成相互平衡发展,在平衡中体现教师的应变能力,在平衡中展现师生智慧互动的火花。 Classroom teaching is a process of dynamic development. This process is to prepare the teaching preconditions after preparing teaching materials and preparing students, and then implement the pre-set process. It follows the law, but also has a flexible generative and unpredictable. Effective teaching should be the pre-class prerequisites and the class generated balanced development of teachers in the balance reflect the resilience of teachers and students in the balance of interaction to show the spark of wisdom.