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根据教学大纲的要求,通过对这一节课的教学,要使学生知道什么是浮力和浮力的方向,理解浮力产生的原因,因此本节课的教学重点是探究认识浮力,教学难点是探究浮力大小与物体排开的液体所受的重力的关系的过程,此外教师还应激发学生对周围生活中浮力应用实例的兴趣。了解浮力应用的社会价值。
According to the requirements of the syllabus, the teaching of this lesson should enable students to know what is the direction of buoyancy and buoyancy and understand the causes of buoyancy. Therefore, the teaching of this lesson focuses on exploring buoyancy and the teaching difficulty is to explore buoyancy The size of the object and the gravity of the fluid that is being discharged by the teacher. In addition, the teacher should also stimulate the students’ interest in the examples of buoyancy applications in the surrounding life. Understand the social value of buoyancy applications.