教学支架是学生在跨越“最近发展区”时教师提供的协助.面对形式多样的物理教学支架,面对不同的学习者,面对不同的学习任务,教师在课堂互动中如何应用教学支架是本文探讨的重点.适时性、适切性、适度性是教师在应用教学支架时的原则.多样化、综合化、差异化是教师合理应用教学支架的策略. The teaching support is the assistance provided by the teachers when they are crossing the “Development Zone.” Facing various forms of physical teaching support, facing different learners and facing different learning tasks, how can teachers apply teaching in classroom interaction? Stent is the focus of this article.Due to timeliness, appropriateness and appropriateness are the principles that teachers should apply in the teaching support.Diversification, integration and differentiation are the strategies that teachers should apply teaching support rationally.