一、背景说明一年一度的会宁县优质课如期举行,2011年初中物理参赛的课题定为《液体内部的压强》一节。作为参赛课,首先要体现课改精神,在教师的引领下,把课堂交给学生,让学生真正成为学习的主体,为此把本节课液体的压强由原来的演示实验改为学 First, the background description The annual Huining County high-quality class scheduled to be held in 2011, junior physics competition topics as “the pressure of liquid” section. As a participating class, we must first reflect the spirit of curriculum reform, under the leadership of the teacher, the classroom to the students, so that students truly become the subject of learning, so the pressure of the class liquid from the original demonstration experiment to learn