如果说一年之计在于春话,那么同样可以说,一课之计在于“引”。“引入”是一节课的开始,需引的到位、引的有技巧,方能达到“引人入胜”的效果。多年的物理教学工作中,积累了一些不成熟的经验,愿与各位同仁切磋,并求教于大家。一、利用小实验创设情境小实验一般趣味性较强、易操作、原理简单易懂,极易引起学生兴趣,所以非常适合作为一节课的引入素材。如学习浮力时,我设计了这样的小实验:将矿泉水瓶底端割掉,瓶口朝下, If we say that the plan for a year is in the spring, then we can say that the lesson is that the lesson is “引入”. “Introduction ” is the beginning of a class, to be cited in place, cited skills, in order to achieve “fascinating ” effect. Years of teaching physics, has accumulated some immature experience, is willing to discuss with colleagues, and ask for advice to everyone. First, the use of small experiments to create scenarios Small experiments generally interesting, easy to operate, the principle is easy to understand, easily aroused the interest of students, so it is very suitable as a class introduction of material. When studying buoyancy, I designed such a small experiment: cut off the bottom of the mineral water bottle, bottle down,